So I just upgraded to the retail release version of Windows 10 and I am unable to stretch a 4:3 resolution on my 16:9 monitor in CS:GO. Yes I have selected the option "Scale image to full panel site". I can stretch my desktop at 4:3 resolutions no problem but the moment I load up CS:GO in full screen it won't stretch no matter what I try. This obvioulsy wasn't a problem in Win7 or 8.1 so I did some googling and the issues has been present since W10 beta build 10074. Running a r9 290 on Dual link DVI with most current drivers.