Running steam link from my PC to tvOS worked perfectly for years, but for the past few months it has been lagging to point where it is unplayable. No network config or PC hardware changes since.

Tested and works perfectly from the same PC to macOS and iOS clients. Looking at the streaming stats overlay on each device, everything is identical except for under ‘packet loss’ there is a 75% frame loss on the Apple TV.

I’ve also tested from macOS to the Apple TV and it works fine, so it seems to only be an issue from the PC to the Apple TV.

Both devices have wired connections to the router (no wifi at any point). I’ve also tried over wifi on both devices incase it is an Ethernet issue, no difference there either.

I’ve tried clearing settings and reinstalling Steam on both devices + reinstalling AMD drivers on the PC, but no difference.

Any thoughts on what could be wrong or where to look next?

ATV is a 1st gen 4K