FYI- Similar to other users, I'm still getting a significant amount of "stuttering/choppiness" when playing downloaded scenes of any file type or size. Using a desktop with Valve Index, only an issue since the update. Not a GPU issue/codec issue/etc.
Also still having issues when selecting downloaded scenes to play- half the time the scene will open up to a black screen and not load, and I have to back out and select the scene to play again. Sometimes takes 2-3 tries before the video actually plays, sometimes more than a dozen tries, sometimes it just does not work at all.
Hoping further updates and bug fixes come soon...this has been a bad one.