Beta Driver D3D9 and D3D11 are options but H265 > H264 fails and falls back to software transcode. Then tried Standard 31.0.101.3277 - Blazing speed with D3D11 - Chrome has a spinning blue circle that doesn't go away but it's playing. 4K loading circle not present UHD 770 was 190fps so with 4K the Arc is slightly slower (on par) but smashes the UHD 770 at 1080p.  Drivers do definitely cause a lot of issues it seems, although the Arc has blistering speeds at 1080p, I'll be switching
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