Actually, though, toolkits that still have XRender backends will run relatively efficiently over the network. To be fair, this is becoming a thing of the past s

Actually, though, toolkits that still have XRender backends will run relatively efficiently over the network. To be fair, this is becoming a thing of the past slowly, but it's not gone yet: Qt 6 re-added the XRender backend due to complaints of how much slower X11 networking was! Granted though, it does nothing for apps using Electron. However, try e.g. the Dolphin file browser on a 4K display over the network, and you'll find it is clearly faster than should be possible. Probably I should've made it clearer, but imo the bigger problem is that tweaking Waypipe to replace old uses of ssh -Y shouldn't be needed; it should be possible for it to determine what possible options can be used and switch things around to deal with CPU or network bottlenecks most effectively. Easier said than done. There's also still some bugs under Waypipe; it's an understandably challenging problem.