Just installed windows 10 pro x64 build 10240. Did a clean install. I play cod advanced warfare. It worked well for few days but after that since yesterday it has started giving problems. I play the game at maxed out settings except super sampling which is turned off. I used to get constant 60 fps but now it gives only 30 fps.. But when i turned off vsync it again started giving 60 fps.. But terrible screen tearing occurred. Same happens with hitman absolution. The only problem is vsync.. But i am confused why it works for few days and starts giving problems later on.. The only option left for me is to do a clean install of windows again. Please someone tell a permanent solution for the problem,its stupidity to format windows after every 5 days.