just Give A look At it..I think You might to know

Guys, Now I am on CM 11 and it gives a really bad performance on Gaming and battery life. And also my nexus heats like a heater. (Means too much hot . lol) could you guys plz tell me which Rom has best performace even it (KK,LL, orMM) Or tell me which Roms and kernal Combination Are you Using Now !!!!
Any help will be really appreciated...