60fps YouTube videos (especially 1080p ones) with AVC codecs push both Core and Memory Clocks to their maximum values (unnecessarily driving GPU temps up to 65 and even 70 degrees C) when Hardware Acceleration is enabled. 1080p 60fps videos with VP9 codecs on the other hand, seem to work fine (~55 degrees C).
The problem persists regardless of browser (I've tried Chrome, Firefox, Edge and Opera).
I've been having this issue for years now. I don't recall a driver version that had this fixed.
Video games work fine.
1080p 60fps video with AVC codecs for example: Crysis 3 Gameplay HD 1080p 60fps SOURCE H.264 -test - YouTube
GPU: Sapphire r9-290 Tri-X
Operating system: Windows 10 64bit
Current driver version: 19.9.2
Monitor: Dell U2414H
Resolution: 1920x1080 @60hz
BIOS version: "F5"
PSU: Seasonic M12II 620w
RAM: 8gb DDR3 1600mhz