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Why does stock run better than 4.4 CM based roms?

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Default Why does stock run better than 4.4 CM based roms?

Title says it all, I tried like 4 Cm based roms and went back to stock because the all had jitter and lag from time to time. Scrolling wasn't nearly as smooth either. Typically CM improves things so curious if anyone else noticed this and might know why.

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Hmmm.... I've had quite the opposite experiences. Cm has been very buttery on my g pad. I'm running the latest cm nightly...

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Nexus 5 (32GB White)
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LG G Pad 8.3 V500
ROM - Latest CM 11 Nightly

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Motorola Droid Pro
HTC Thunderbolt
HTC Rezound
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Nexus 7 (2012)
ROM - CM10.2 Latest Nightly
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Same here, CM is definately running smoother than the stock OS.
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I've found that all the cm based roms run smoother than stock.
Is there any app you have different or any settings you are altering that you don't change on stock?

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I also find cm11 much smoother than stock. Surprised to read the opposite, the difference is huge IMHO.

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For what I use my g pad, I didn't experience any major difference between stock and cm11 (I think it's called the lazardus variety).
At least what concerns apps. For the UI, it could be that cm11 runs a bit faster, but maybe this is just perception. But cm11 just brings the features I was missing in stock.
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Default I think it's oposite

Back when I used stock rom I often got anoyed over lag when screen rotated - espesialy when waking up.

Now I use CM M3. I still experinece a little lag when rotating the tab, but it is not as bad as stock rom - I think it is less because I don't get as anoyed over it as I used to be on stock rom.

Only lag I still find a little anoying is when I use Screen of and Lock ap to turn of the tab - odly enough it works perfecktly from the lockscreen.

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