Objects popping in after a frame (Occlusion culling error?)

[Lucas]

I'm getting a graphical glitch where when an object not in view becomes in view it pops in a frame late. So when I turn a corner I will quickly see walls appear. I've tried different combinations of graphical options with no luck. If anyone has a fix that'd be great!

[AFFM]

This is pretty much just how the engine works, unfortunately. If your computer isn't struggling performance-wise, you can disable occlusion culling...

in the console type:
ren_bOcclusionCulling=0

(Pretty sure that's the command, or something similar...)