Originally Posted by TheWarrior01
well, i have already tried it but it some times crashes while opening some apps, so i went back to stock rom and removed all the unnecessary Samsung & GApps
If you are on stock ROM, after removing some gapps and samsung apps, try Lspeed for battery anf mobile performance. You may feel difference.
On my Core GT-i8262 Cosmic ROM never crashed in last one year. There was rev2 of that ROM. Did you flash that too?
Actually, try flashing different ROMs. One or the other should suit your mobile.
On my Quattro GT-i8552, I have tried 8 different ROMs. Droidwin 5 suited on my mobile, so using that as a daily driver.