On driver version 20.4.2 it was possible to write 1440p 60fps HEVC, with 80% load on the ENCODE core, and on 20.9.1, the same settings load the core to 100%. Correct it please! I am attaching a video with confirmation.
AMD 20.9.1 Recording on RX 580 (1440p 60fps HEVC) - YouTube
AMD 20.4.2 Recording on RX 580 (1440p 60fps HEVC) - YouTube