I am playning The witcher 1 at the moment.I know its gpu extensive game what would be the best settings for the game ,my cpu is intel g3258 at 4.3ghz and 4gig ram.Would overclocking my gpu help my games or not?and what would be my settings on most games.What should my sapphire r7265 play games at cause it looks bit slow at rendering the games also would it help if i overclock it.