My second rig has a RX480/3770 16GB while my main rig has a 32GB 6700kOC@ 4.8ghz GTX1070 FTW OC@ 2100 Boost. I was also checking around to see if my 3770 wasn't a bottleneck figured it wasn't since Witcher 3 is using the RX480 at 99-100% when i turn off Vsync.