hi i'm using zotac nvidia geforce gtx 760 on Gigabyte 880gm-usb3 Mother board with amd fx 8150 and 8GB DDR3 Ram. After playing GTA-V for about 20 min it lags Completely... not able play at all.. even if i change the Graphic settings from High to Low issue persists.. works perfectly fine in High Graphic Setting for about 20-30min.. Don't know whats the Problem... Pls Help..??