Not OP, but I use Parsec to do things remotely on my desktop from my laptop. Latency and frame rate are far, far better than VNC or RDP

https://parsecgaming.com/

Well... tbh I'm still working on the build. But I don't do windows and I don't play FPS or anything where latency would be super important. I use VNC across town to my office and that's generally good enough... but we'll see. I had small hopes that "laptop as linux thin client" would have an easy PNP solution by now, but my research indicates that this still isn't the case. Definitely open to suggestions.

It's been a bit since I had a second device to try it with, but my experienced with Windows Remote Desktop have been less of a "this would be hard to game with" lag and more a "the delay in my mouse movement is making my head hurt" lag.

That is weird. For me the mouse cursor is always rendered locally, so feels as responsive as on the desktop itself.

Sure if I'm on a high latency link I might have to adjust to clicking taking a wee bit to register, but normally I don't have to adjust my usage.

Windows to Windows.

Linux. SSH. Command line.

I tried WRD too, with the same result.