NVIDIA hardware acceleration inconsistently working with web streaming

Plex doesn’t seem to hardware transcode at all for me… Emby works, lol
Plex Version: 1.31.0.6654
NVIDA Driver: 525.89.02

Error while decoding stream #0:0: Invalid data found when processing input
[h264 @ 0x7fb620a20080] co located POCs unavailable
[h264 @ 0x7fb620a20080] No decoder surfaces left