7.1 TrueHD from Nvidia Shield Server on Player - transcoder impossibly slow / failure

Great. I changed that directory to

/storage/4D4F131D28B39596/Android/data/com.plexapp.mediaserver.smb/cache

I can see the storage filling up, however the transcoder is still taking an impossibly long time. Playback is also very slow and choppy. This happens on almost every 4K movie that has to transcode. It doesn’t happen transcoding 1080p. Is the HDD too slow?

Here’s the new log:
Plex Media Server Logs_2021-02-23_18-02-46.zip (320.0 KB)

Also, as a side note, (this is a completely different issue related the other topics I posted) – syncing still doesn’t work. I try to sync a movie with the new settings and I get the error “the server’s disk is almost full” and 0% downloaded, which is the main problem in this thread