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.)