I /bugged what I am about to type but I figured I would post it here as well.
The whiteout effect is when certain objects appear pure white. some say it's missing a texture. The whiteout effect causes extreme slowdowns when first encountered and sometimes lockups or crashes. It never has fixed itself for me as some others proclaim and is always present when I play.
I think it is actually somthing to to with application of reflective surface. I'll include a Screenshot.
I believe the whiteout effect may be from from a missing or extremely high upper boundary on reflective surfaces function or is being called too many times or possibly maximum times giving it a white look.
People are reporting that the torch can somtimes fix this. This could possibly be because the reflective surface in regard to the torch is not missing or does not have the extreme upper boundary.
Shiney Neamsog Bunkers
Same place except torch is on. Notice in the top right the whiteout still in effect out of reach/sight from torch interaction.
I thought I would add that I have tried several methods of fixing this myself, but it seems certain objects and sometimes monsters like shiney spider butts always appear white like this.