It doesn't work at all.

[Koalamana9]

I open the project in Godot 4.2.1 stable and get errors right away:

res://addons/chunx/chunx.gd:10 - Parse Error: Could not find type "WorldStreamer" in the current scope.
res://addons/chunx/chunx.gd:13 - Parse Error: Could not find type "WorldStreamer" in the current scope.
res://addons/chunx/chunx.gd:21 - Parse Error: Could not find type "WorldChunk" in the current scope.
res://addons/chunx/chunx.gd:22 - Parse Error: Could not find type "WorldStreamer" in the current scope.
res://addons/chunx/chunx.gd:28 - Parse Error: Could not find type "WorldChunk" in the current scope.
modules/gdscript/gdscript.cpp:2788 - Failed to load script "res://addons/chunx/chunx.gd" with error "Parse error". (User)

After I do Reload Current Project errors are gone but if I open test scene.tscn I get a warning:

An incoming node's name clashes with Streamer/(1, 0, 0)/MeshInstance3D already in the scene (presumably, from a more nested instance).
The less nested node will be renamed. Please fix and re-save the scene.

If I press play I get error on line 29 in streamer.gd
Invalid get index 'positionh' (on base: 'null instance').

Bui it kinda workds in Editor, cube is appearing and disappearing but there is a noticeable stutter.
This is basically unusable for anything with heavy textures and detailed mesh, please remove any mentioning of streaming from this repo so as not to mislead others, this is horse shit and not streaming.