Watched an hour long youtube video last night, and the audio desynced at the same rate it usually does. By about 40 minutes in there was at least a second of audio delay using the VRC_SyncVideoPlayer. Have not tried with VRC_SyncVideoStream yet but I'm going to assume it still desyncs as well. This was done on a map that was re-uploaded using the Unity 2017 version.
The audio desync was one of the big headlining features that this patch was supposed to fix and it doesn't fix it at all. It's not like it's even slightly better now or anything, it is exactly the same pre-patch as it is post-patch.