Hi. I just wonder about this.
Many times, when a new firmware comes out, after 2-3 days there are custom roms based on it, with tweaks (edited build.prop for example) and other speed mods.
Do they really improve speed? I mean seriously, if someone tests the 3-4 most known stable custom roms, based on same android version, and with the same kernel, also with the same apps on it, will be any noticeable difference in speed?
I see other devs releasing a rom after 3 days, and I can't explain what kind of tweaks could give more speed being stable at the same time.
Maybe custom roms are just modded/themed stock roms, and when there's a speed differenve it's because of the kernel inside.
Just being curious about that (also could make the choice of the rom itself easier...)
Any opinion? From your experience at least.
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A mixture of both .
jje
definately a mixture of both. They both make huge improvments over stock. in my opinion anyway
probaby karnel or speed
some costum rome improve your phone speed or karnel speed. especially visuality.
temyes said:
some costum rome improve your phone speed or karnel speed. especially visuality.
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I don't need to improve my phone's karnel speed, it gets enough girls as it is.
However in my experience speed improvement and the smoothness that comes with it are mainly the process of the kernel as that controls the interaction between android and the hardware, where most performance bottlenecks happen. The ROM itself adds functionality, appearence and most important of all...stability.
At least so it appears to me.
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rschenck said:
I don't need to improve my phone's karnel speed, it gets enough girls as it is.
However in my experience speed improvement and the smoothness that comes with it are mainly the process of the kernel as that controls the interaction between android and the hardware, where most performance bottlenecks happen. The ROM itself adds functionality, appearence and most important of all...stability.
At least so it appears to me.
Sent from my GT-I9000 using XDA Premium App
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I partially agree. I mean, if we assume stock roms are stable, custom roms can;t be more stable.
So, they provide some speed, maybe because there are not so many system apps inside, and mostly they provide some nice mods (visual and functional).
Hey guys. I usually wouldnt have made a thread like this, but honestly, i am getting tired trying rom after rom to find the one that works. I am the sort of guy who switches phones pretty often because i like what Devs at XDA are able to do to customize them. So i have recently started using higher end phones, and coming from mid-rangers i expected awesome performance and lag free experience. My last device was a one plus 2. After switching to mi5(which has a better processor), i have been experiencing lag spikes with rom. None of them work perfectly smooth, I would go to the depth of saying that my old Nexus 5 provides much smoother experience compared to this. Surprisingly, this is not the case with miui. The stock Miui rom aswell as my current rom(cpMIUI) are both super smooth(as is expected out of a sd820). I am stock android guy though, also google camera port doesnt work on miui. I just wanted to confirm if it was just my unit or is everyone facing similar issues. Buying a sd820, i dont expect something as simple as pulling down the notification bar to be laggy. Also. this issue is more prominent with Lineage OS and Lineage OS based roms. I found AOSP rooms to be generally smoother, but still, laggy enough to notice. This really wasnt the case with OP2, and i honestly wouldnt have switched if it wasnt for the amazing camera of Mi5(only with GcamMod ). Any help would be much appreciated. PS: I have tried custom kernels, even those which overclock this sd820 to normal frequencies. But no luck . I really dont have the budget to switch phones rn, and i would like to stick to mi5. Hope someone can help.
aditya1999 said:
Hey guys. I usually wouldnt have made a thread like this, but honestly, i am getting tired trying rom after rom to find the one that works. I am the sort of guy who switches phones pretty often because i like what Devs at XDA are able to do to customize them. So i have recently started using higher end phones, and coming from mid-rangers i expected awesome performance and lag free experience. My last device was a one plus 2. After switching to mi5(which has a better processor), i have been experiencing lag spikes with rom. None of them work perfectly smooth, I would go to the depth of saying that my old Nexus 5 provides much smoother experience compared to this. Surprisingly, this is not the case with miui. The stock Miui rom aswell as my current rom(cpMIUI) are both super smooth(as is expected out of a sd820). I am stock android guy though, also google camera port doesnt work on miui. I just wanted to confirm if it was just my unit or is everyone facing similar issues. Buying a sd820, i dont expect something as simple as pulling down the notification bar to be laggy. Also. this issue is more prominent with Lineage OS and Lineage OS based roms. I found AOSP rooms to be generally smoother, but still, laggy enough to notice. This really wasnt the case with OP2, and i honestly wouldnt have switched if it wasnt for the amazing camera of Mi5(only with GcamMod ). Any help would be much appreciated. PS: I have tried custom kernels, even those which overclock this sd820 to normal frequencies. But no luck . I really dont have the budget to switch phones rn, and i would like to stick to mi5. Hope someone can help.
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Mi devices works better with MIUI... That's just the way it is. Custom rom experience on Mi can't compare with the likes of Oneplus, Nexus, or maybe Pixel...
Sent from my MI 5 using Tapatalk
u can install Gcam in miui just use magisk to root and add camera fix module
Gcam will work in miui9
am using los15.1 and most of the apps freezed now its smooth and giving good battery life
All lags, freezes and scroll stutters caused by kernel. All oreo kernels based on HMP scheduling with perf daemon. And don't know why, but it cant provide smooth FPS while ui drawing (maybe some bug with frequency drops). So, 90% roms based on Oreo will lag while drawing UI all time (you can check it in dev settings > Profile GPU Rendering). Some roms trying to avoid this bug, like LOS, AEXMod with some tweaks in governor. This 2 roms much smoother than other. Or you can change default governor from Interactive to Conservative (root required). It brings massive boost on ui drawing smoothness. Or try something based on EAS kernels (Purefusion, JDC AOSP). But these roms based on 8.0 Oreo.
StealthHD said:
All lags, freezes and scroll stutters caused by kernel. All oreo kernels based on HMP scheduling with perf daemon. And don't know why, but it cant provide smooth FPS while ui drawing (maybe some bug with frequency drops). So, 90% roms based on Oreo will lag while drawing UI all time (you can check it in dev settings > Profile GPU Rendering). Some roms trying to avoid this bug, like LOS, AEXMod with some tweaks in governor. This 2 roms much smoother than other. Or you can change default governor from Interactive to Conservative (root required). It brings massive boost on ui drawing smoothness. r try something based on EAS kernels (Purefusion, JDC AOSP). But these roms based on 8.0 Oreo.
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Click to collapse
Thanks for a constructive reply. I am not using LOS because of the fingerprint delay bug, also i found LOS to be the laggiest of them all. But i recently installed Cosmic os 8.1, and this one seems to be rendering fine. It is using the priima kernel i suppose, with interactive governors and cfq for io scheduling. Also, i just checked, it has oc'ed the sd820 to normal frequencies (2.15 and .16)
Also, i have tried Floppy kernel, based on all 3, Google, linaro and ubertc. Also, i tried switching the governor to zen(the one i am aware of thats made to make your ui smoother). This issue is not only persistent with oreo roms, but also the nougat roms. But i have been happy and impressed by cosmic, but i will keep on switching roms and hopefully would be able to provide some feedback to the XDA community.
vaisakmct said:
u can install Gcam in miui just use magisk to root and add camera fix module
Gcam will work in miui9
am using los15.1 and most of the apps freezed now its smooth and giving good battery life
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Click to collapse
I will try that one. Can you link me to the module thread?
aditya1999 said:
Hey guys. I usually wouldnt have made a thread like this, but honestly, i am getting tired trying rom after rom to find the one that works. I am the sort of guy who switches phones pretty often because i like what Devs at XDA are able to do to customize them. So i have recently started using higher end phones, and coming from mid-rangers i expected awesome performance and lag free experience. My last device was a one plus 2. After switching to mi5(which has a better processor), i have been experiencing lag spikes with rom. None of them work perfectly smooth, I would go to the depth of saying that my old Nexus 5 provides much smoother experience compared to this. Surprisingly, this is not the case with miui. The stock Miui rom aswell as my current rom(cpMIUI) are both super smooth(as is expected out of a sd820). I am stock android guy though, also google camera port doesnt work on miui. I just wanted to confirm if it was just my unit or is everyone facing similar issues. Buying a sd820, i dont expect something as simple as pulling down the notification bar to be laggy. Also. this issue is more prominent with Lineage OS and Lineage OS based roms. I found AOSP rooms to be generally smoother, but still, laggy enough to notice. This really wasnt the case with OP2, and i honestly wouldnt have switched if it wasnt for the amazing camera of Mi5(only with GcamMod ). Any help would be much appreciated. PS: I have tried custom kernels, even those which overclock this sd820 to normal frequencies. But no luck . I really dont have the budget to switch phones rn, and i would like to stick to mi5. Hope someone can help.
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Click to collapse
Absolutely yes! People were blaming me also for using antutu, because I had this doubt, then discovered that the kernel uses a strange sort of cpu scheduler which causes a performance drop of 20/25%, (still can't fix switching performance profile) results were different switching to a custom kernel. I think that people when create new roms they just steal LOS kernel, so that's why this issue occurs in more than one rom.
Anyway I also prefer the stock android camera, and I like to use the "classic" way instead of magisk thing (never liked that), just download GCam, then remove in the framework folder the camera_experimental.jar (or something called like that) and you should be fine, there are some little bugs too but is is usable.
lukypuie said:
Absolutely yes! People were blaming me also for using antutu, because I had this doubt, then discovered that the kernel uses a strange sort of cpu scheduler which causes a performance drop of 20/25%, (still can't fix switching performance profile) results were different switching to a custom kernel. I think that people when create new roms they just steal LOS kernel, so that's why this issue occurs in more than one rom.
Anyway I also prefer the stock android camera, and I like to use the "classic" way instead of magisk thing (never liked that), just download GCam, then remove in the framework folder the camera_experimental.jar (or something called like that) and you should be fine, there are some little bugs too but is is usable.
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So which kernel are you using rn? Cosmic OS comes with the priima kernel, it is the best experience i have had by far. Glad to know i am not the only one suffering stutters, but also kinda disappointed to see this happen.
aditya1999 said:
So which kernel are you using rn? Cosmic OS comes with the priima kernel, it is the best experience i have had by far. Glad to know i am not the only one suffering stutters, but also kinda disappointed to see this happen.
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Yea, me too, and there were people who treated me like crazy lmao, imo is a kernel scheduler issue, btw Idk why that happens , anyway there are plenty of custom kernels, in particular I used Floppy which fixes the problem.(Still need to tweak some kernel governor settings)
lukypuie said:
Yea, me too, and there were people who treated me like crazy lmao, imo is a kernel scheduler issue, btw Idk why that happens , anyway there are plenty of custom kernels, in particular I used Floppy which fixes the problem.(Still need to tweak some kernel governor settings)
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Aye i tried floppy. Didnt quite work for me. Regardless, priima is working fine. I am thinking of switching to other roms. Will try the floppy again, thanks for the advice.
aditya1999 said:
Aye i tried floppy. Didnt quite work for me. Regardless, priima is working fine. I am thinking of switching to other roms. Will try the floppy again, thanks for the advice.
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When i said it needs some tweaks, that is because it works in a strange way, the performance profile in the "Battery" section of LOS needs to be set to something higher, that controls the CPU, meanwhile there I also used an app called "Spectrum" that lets you control the GPU performance profile (Even though it should be control CPU), you need to set all of those to "Balanced"
lukypuie said:
When i said it needs some tweaks, that is because it works in a strange way, the performance profile in the "Battery" section of LOS needs to be set to something higher, that controls the CPU, meanwhile there I also used an app called "Spectrum" that lets you control the GPU performance profile (Even though it should be control CPU), you need to set all of those to "Balanced"
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Interesting. I am busy this weekend, but i will surely test this one after i come back.
Yes
aditya1999 said:
Hey guys. I usually wouldnt have made a thread like this, but honestly, i am getting tired trying rom after rom to find the one that works. I am the sort of guy who switches phones pretty often because i like what Devs at XDA are able to do to customize them. So i have recently started using higher end phones, and coming from mid-rangers i expected awesome performance and lag free experience. My last device was a one plus 2. After switching to mi5(which has a better processor), i have been experiencing lag spikes with rom. None of them work perfectly smooth, I would go to the depth of saying that my old Nexus 5 provides much smoother experience compared to this. Surprisingly, this is not the case with miui. The stock Miui rom aswell as my current rom(cpMIUI) are both super smooth(as is expected out of a sd820). I am stock android guy though, also google camera port doesnt work on miui. I just wanted to confirm if it was just my unit or is everyone facing similar issues. Buying a sd820, i dont expect something as simple as pulling down the notification bar to be laggy. Also. this issue is more prominent with Lineage OS and Lineage OS based roms. I found AOSP rooms to be generally smoother, but still, laggy enough to notice. This really wasnt the case with OP2, and i honestly wouldnt have switched if it wasnt for the amazing camera of Mi5(only with GcamMod ). Any help would be much appreciated. PS: I have tried custom kernels, even those which overclock this sd820 to normal frequencies. But no luck . I really dont have the budget to switch phones rn, and i would like to stick to mi5. Hope someone can help.
Click to expand...
Click to collapse
Hello, I have the same problem. My MI 5 only works on miui. Any other newer rom with android Oreo brings me problems, slow looks like snapdragon 4xx. Game performance gets horrible. But they are only in the most recent roms, because in the stable JDC Team 7.1.2 rom it behaves absurdly fluid and fast, in Lineage 14.1 as well. I do not know what causes this but I can not use any more Oreo roms. I prefer Pure Android but can not use the new roms at the moment, I should settle for the nougat or miui roms. Well, I'm not saying that the new roms are bad, the work of the developers is wonderful, congratulations to everyone, but something in the new roms does not behave well.
Colkiese171 said:
Hello, I have the same problem. My MI 5 only works on miui. Any other newer rom with android Oreo brings me problems, slow looks like snapdragon 4xx. Game performance gets horrible. But they are only in the most recent roms, because in the stable JDC Team 7.1.2 rom it behaves absurdly fluid and fast, in Lineage 14.1 as well. I do not know what causes this but I can not use any more Oreo roms. I prefer Pure Android but can not use the new roms at the moment, I should settle for the nougat or miui roms. Well, I'm not saying that the new roms are bad, the work of the developers is wonderful, congratulations to everyone, but something in the new roms does not behave well.
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Try the cosmic os. It seems to be working amazingly well. Also Los never worked for me, full of stutters and the ofc the fingerprint delay on lockscreen issue. Also yeah, jdc aosp should work, in my experiments, all AOSP based roms are working fine, there is some issue with Los kernel, and hence with all roms based off of it.
Hi guys, if you guys are using custom roms please post your benchmark scores. Because asus6z scores higher than our model, i need to move to custom rom and the fastest one...
It's also help peoples who all are searching for performance roms.
Why not try maxing out your cpu and change the governor to performance?
Turbine1991 said:
Why not try maxing out your cpu and change the governor to performance?
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That will cost battery life too, compared to miui , there are lot of stock type roms provide better performance with battery life.
Custom rom evox 3.3 build 30th November
My Phone is 8gb/256gb Chinese varient with stock miui 11.0.4
leon s.kennady said:
Hi guys, if you guys are using custom roms please post your benchmark scores. Because asus6z scores higher than our model, i need to move to custom rom and the fastest one...
It's also help peoples who all are searching for performance roms.
Click to expand...
Click to collapse
If I recall correctly, many reports say that MIUI-based roms significantly faster, even if lacking in some other aspects.
xiaomi.eu ROMs have a number of optimizations that should make it faster than others, though I'm not sure if only marginally or significantly.
AvgZing said:
If I recall correctly, many reports say that MIUI-based roms significantly faster, even if lacking in some other aspects.
xiaomi.eu ROMs have a number of optimizations that should make it faster than others, though I'm not sure if only marginally or significantly.
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Click to collapse
Stock Roms always have better Benchmark results.
Abir the boss said:
My Phone is 8gb/256gb Chinese varient with stock miui 11.0.4
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Im using indian version with 11.0.1 i got 41**** ......
My point is, if you want to compare underlying efficiency, apples with apples, at least clock them at the same frequency.
I've tried 3 of the roms, benchmarks aside, they can be really sluggish at times and offer dismal battery life. I just don't think custom kernels/roms have really matured enough to focus on performance on our device.
MiUI 11+ latest v3 of Quax kernel v