Extremely slow LSP performance with Godot

[rcorre]

I'm using the suggested configuration for godot4:

[language-server.godot]
command = "nc"
args = ["localhost", "6005"]

[[language]]
name = "gdscript"
language-servers = ['godot']
formatter = { command = "git", args = ["stripspace"] }
auto-format = true

LSP diagnostics are extremely slow, and some strings seem to come in one character at a time:

https://asciinema.org/a/629621?t=20.

Has anyone experienced this, or have any idea how to troubleshoot? Thanks!

FWIW, I've tried both nc and netcat, and both are similarly slow.
hx.log

[em-s-h]

It's an issue with Godot itself. The solution provided in the issue is to:

Turning on "Use Threads" in:
Editor Settings
Network
Language Server
Use Threads ✔️

[rcorre]

Thanks, that makes it significantly better! It's still more sluggish than most LSPs, but at least useable now.