So a brief back story on this goes as follows. I recently downloaded the new Middle Earth : Shadow of Mordor game from steam and when trying to open it continued to get a error saying that my GPU did not support directx11. Upon looking into it further I found out that I had to have a directx11 supported GPU to play the game. (My old video card was an outdated Nvidea Geforce 240 or something from 2009. Very old card. I upgraded to the MRI AMD Radeon 7950 Twin Frozr 3 (I believe was the full name) after getting it installed and booting the computer up everything looked to be running smoothly. The desktop was fine but the moment I opened steam anywhere on the actual steam window the mouse pointer is lagged to extreme proportions. Also if I click and hold and drag the steam box around it lags terribly. if however, I bring the mouse to the edges of the screen where the steam box ends and my mouse is hovering over desktop again it moves perfectly fine. The same thing happens on google chrome on certain webpages it seems, but there is no lag on others. The one in perticular is 2ez.gg which is a league of legends collection of websites all linked to one place. I get the annoying and horrid mouse lag on that site. I tried others, google, This website, Gmail, youtube, all have no mouse lag. I'm just completely confused as to what is causing this and would love to get rid of it immediately. PLEASE HELP!!!