[Q] I9190 glitches - what to do?

[Nekrid]

Good day,
I have unpleasant problem at my I9190. Every 5-7 minutes my device becomes to lag for 4-5 seconds. It doesn't matter if you watch a film or Youtube, play games, or just work with the interface. Every time periodically an image becomes to lag, but sound continues to work without problem. I tried to make wipes but it doesn't help. Also I tried to reinstall stock rom. Can somebody describe what is the reason of it? Root or what?
My previous I9190 (was changed because of the problems with screen) works without these glitches.
Appreciate if you will help me, these lags are really annoying.

 

[Whosat]

Sounds like some hardware is causing those intermittent freezes. If you are certain reverting to stock everything and flashing in custom ROM + kernel still causes the issue then you might need to send the device in again.

 

[Nekrid]

I tried to flash CyanogenMod for interest and lags dissapear. After returning to stock they appeared again. Can't understand the reason, really. I tried to use smartphone with and without sim, with and without external card, with and without root, the result is the same. The only thing I can think that one of stock apps or processes makes these problems but who knows..