I have a r9 270x and game keep glitching out and crashing ive tried everything i can think of i put new thermal paste on the GPU because it was completely dried out went from win 10 to 8 to 7 and switched to all my pci ports tried different drivers taking ram out switching dvi to vga to hdmi none of it works i have a video of what happens it usually happens after playing for a bout 5-10 minutes i have the memory clock and the GPU clock at 10 under each and 80% fan speed all the time and it doesn't seems that it overheats https://www.youtube.com/watch?v=_YItoeRVN3s