Rubat
That seems to only affect the 2D skybox on maps without 3d Skybox, and only when looking at some existing part of the map, but I do suppose it's progress....
Ignoring the fact that you should not be needing auto refresh on live servers, appears to be working fine in my testing, at least on Windows 10? I tested both...
What if you edit the file not in `addons/`, but in your `addons_darkrp/`?
I have applied a potential fix, let me know if it works for you.
What if you move the `addons_darkrp` folder outside of the game folder entirely?
Related: https://github.com/Facepunch/garrysmod-requests/issues/680
I couldn't be bothered to adapt your script to work in GMod, but the wiki page for [render.PushRenderTarget](https://wiki.facepunch.com/gmod/render.PushRenderTarget) has a clear indication to use `cam.Start2D` to draw to render targets...
Provide Lua code to reproduce the issue, if you believe there's still an issue.
mat_reloadmaterial ?
Well people are doing it somehow, perhaps ask on Discord?