Help GPU bug

My GPU keeps bugging out ever since Catalyst Driver 14.1 Beta but idk if its the Driver or unstable overclock 

Basically my second monitor crashes alot specially when i open skype or sometimes the Driver Crashes and i get Bluescreen

basically this is what happens to my second screen:

this is my overclock

Power Limit % +10

Core clock 1160Mhz

Memory Clock 1500Mhz

tems are 40c on idle and 79c on full load

oh and my GPU is a ASUS Direct CU2 AMD R9 270x TOP

Your memory clocks might be too high. If adding to the power limit doesn't help you should try lowering memory clocks.