Heavy buffering on Chrome on remote client

[TheDreadPirate]

Your upload speed is pretty limited for 4k. I wouldn't be surprised if that was a factor. But your system should have been able to handle transcoding to something smaller with just the CPU.

Hardware transcoding should improve things. Yes, turn on "enable hardware encoding". You should "allow encoding in HEVC format". I think all the codec boxes should be checked except MPEG2 for your card.

I would also change the Internet max bit rate to half your upload. 10Mbps in your case. Settings > Dashboard > Playback > Streaming tab (at the top center of Playback).

Test this out before your next watch party.