Why this happen?


i already have:

Reflection_probe
lightgrid(the pink)
skygrid(the blue)
skyboxmodel
hollow skybox
all the worldspawn settings

Add more lights.

For the hollow skybox, did you use a sky texture on the inside faces? or did you just use caulk? If you just used caulk select the inside faces and use a sky texture on them. It doesn't matter which sky texture but just choose one that is as close to your skybox model as you can. It will draw invisible in game as long as you have a skybox model.