I don't think there is any need to suffer just because you have a slow connection. You can use mosh if you're editing on a remote machine, or sshfs if your editor is on your workstation. I have heard that you can run the Language Server on the remote machine as well, for things like completion/indexing/etc. (I personally always just ssh to the remote machine and use Emacs though. Then I have the same environment at home and work and don't have to sync anything.)
The worst behaviour of any editing environment is a lagging keyboard response.
In this COVID-19 era I've found myself working remotely over VPN and on some occasions the response times become very slow.
The most noticeable observation for me is how frustration writing code becomes whenever my editing environment slows over that lagging VPN.
Tasks that are normally subconscious suddenly turn into mental challenges as you find yourself constantly checking if these subconscious actions actually complete.