You can use Cendio Thinlinc which uses jpeg turbo over SSH for faster remote VNC expierance.

Cendio Thinlinc https://www.cendio.com/thinlinc/what-is-thinlinc

Also you can use game streaming technologies such as Steam remote play over layer2 VPN and hack it to stream your desktop. Since game streaming uses mpeg4 like video compression technology and is built for low latency the lag will be less and video quality good.

Steam streaming https://store.steampowered.com/streaming/

You need a Layer2Vpn to use steam streaming Freelan layer 2 VPN https://www.freelan.org/