With all those fancy new video cards you are going to need some drivers (Win 10 64 and Win 7 64)and AMD has just that, thankfully. You can check out the full page of release notes on AMD’s page. Just a couple of highlights below.
Known Issues – Radeon WattMan may not reach applied overclock states. – 3DMark®Firestrike may experience an application hang during GT2 test. – The “Reset” option in Radeon Settings Gaming tab may enable the “HBCC Memory Segment” feature instead of setting it to the default disabled state. – A limited number of HDR enabled TV’s may experience intermittent HDMI signal loss. – Windows Media Player may experience an application hang during video playback if Radeon ReLive is actively recording desktop.
Discussion
Source: [H]ardOCP – AMD Radeon RX Vega Driver Notes