OMNIROM problem [KK] topic

Hello, how's it going?
It has been some time since I've flashed KK OmniROM, it was kind of my dream to use KITKAT :) which is fulfilled now... But I'm facing a problem now. Which is that after a while my cam doesn't respond. It hangs and lags and sometimes records like the lens is broken from middle (feels like it) ... When I remove the camera app from recents and reopen it. It says Can't connect to the camera, and if I try it again it sends me on a green colored screen saying reboot into dload mode/reboot/shutdown/... It is called something like "Watchdog bark alert". It fixes up on a reboot for some time. But this is really annoying, I know it isn't a hardware problem but I'm not able to find any results on Google! My phone is GEEHRC E975. Perfect hardware but this is really annoying, +no OTAs :-/
Which ROM do you guys recommend? I was previously on CM10.2 4.3.1
THANKS
REGARDS

Edit: it also takes almost 5-6 seconds on waking up after deep sleep, or it crashes and reboots itself if I wake it up! None of these problems ever occured before (CM10.2)