I have asus strix 1080 advance version (1835mhz oc mode) and when i overclocking my gpu nothing change even i change it to a lot of higher clock like 1915mhz... I'm using gpu tweak II for overclock and i used ai suite 3 but nothing changed. For some strange reason when i overclocked and tested it with benchmark programs and games, i got lower fps, even in cinebench R15 i got lower score than the oc mode and gaming mode in gpu tweak II. What is the problem ? it's possible my gpu be defective?