Plex not using Intel Quick Sync for 4K HEVC content

[IFireflyl]

@TeknoJunky

*** TONE MAPPING SUPPORT ADDED @ HDR to SDR Tone Mapping | Plex Support ***
do note: enabling tone mapping potentially can cause your server to no longer be able to transcode 4k due to the extra load, especially on windows (only cpu currently supported).

I found the above quote, and it’s possible this applies here since you’re transcoding an HDR title.