Most modern Ethernet LANs are effectively lossless. You're not going to see a single dropped packet unless you saturate the link.
> Which means that using something that can do UDP and manages it's own sequence ordering can do significantly better. This is why things like RDP, PCoIP, etc could do full frame rate HD video 15 years
No it isn't. It's because those things actually compress the video, and X-forwarding generally doesn't. The transport protocol is completely irrelevant, it's just a bandwidth problem.
I've X-forwarded Firefox between two desktops on 10G Ethernet. I can watch 4K video, and I genuinely can't tell the difference between local and remote.
> Which means that using something that can do UDP and manages it's own sequence ordering can do significantly better. This is why things like RDP, PCoIP, etc could do full frame rate HD video 15 years
No it isn't. It's because those things actually compress the video, and X-forwarding generally doesn't. The transport protocol is completely irrelevant, it's just a bandwidth problem.
I've X-forwarded Firefox between two desktops on 10G Ethernet. I can watch 4K video, and I genuinely can't tell the difference between local and remote.