I looked around and could not find much about this issue. Steam and games ran really well on 2015 retina macbook pro in Bootcamp windows 8.1, then I updated to Windows 10 and it seems like the graphics card/processing is not working. I disabled scaling under properties for the Steam app itself, and that made the Steam app run fine. I cannot find such an option on the games themselves, and I cannot get the games to work. Help? I have a moderate to high Mac proficiency, but next to none with PCs. Thanks.