Replace all MP maps skies by the same galaxy skybox already existing in the game files and used for the outside of Live Fire maps that you can never see without glitching or escape in a dropship. Don't do anything about the SP maps except for one of the Effect And Causes dimension and for the gauntlet skybox which will get replaced by... well you'll see yourself. You can install GlitchOverhaul and eventually only keep the S2.GlitchSkybox mod to fix it. This mod also disable the ambiant fog that ruin the vanilla skies and map contrast, but you can also remove this script and put fog_enable_skybox "0" in your config file or launch arguments if you prefer. If you want to remove a night sky from the mod files, keep in mind that mp_thaw is Exoplanet and mp_grave is Boomtown.

Changelog

2.0.4 : Apparently according to my sources angel city was missing since the 2.0. This is fake news. (i still don't have any idea how to fix the gauntlet tho) 2.0.3 : SRY GANG i disabled the fog remover to test stuff in the last version and forgot to re-enable it before making the package 2.0.2 : i don't remember tbh 2.0.0 : now vpk free ! that should fix the skyboxes not loading after some hours of gaming and also ofc make the mod much lighter. 1.0.0 : mod release