"Loading" when run through remote ssh

As you may see, features like hovering over a variable is not working correctly.

I was actually running [code-server](https://github.com/cdr/code-server) on my Ubuntu 18.04 VPS, but the same happened when I ran it through remote ssh (They share one thing in common, which is the lsp is runing on a remote server). Maybe part of this is because network status. However on the same server, same network,I try rust plugin with lsp, all of its feature perfectly worked. Is it beacuse Haskell's gc nature, so the lsp responseness is not as good as rust?