Yuzi download

hello everybody, I have a question its maybe a little noob but Im still reading and cant find the answer. is possible to flash a custom kernel in a stock rom without lose the camera quality? and if its possibly which one is the best.

I trying to change governors in the stock kernel/rom but they keep reverting to initial values, in slim rom can stop the cores which is what Im looking for but the camera is very bad compared with stock.

thanks to all.