Understanding Transcoding Roku

[theguymadmax]

So you probably have a UHD Graphics 630.

Make sure the below settings are enabled in your decoding and encoding settings. Also, you should enable tonemapping. 

Hardware codec support
h264ecode / Encode
AV1: No
h265 / HEVC (8 bit): Decode / Encode
h265 / HEVC (10 bit): Decode / Encode
VP8: Decode / Encode
VP9: Decode / Encode
VC-1: Decode
AVC: Decode / Encode

Transcoding audio uses your CPU, so you'll see higher CPU usage if audio also needs to be transcoded.