I was playing on our speed server a few minutes ago and there happend some weird graphic issues (just for me?).
1. Screenshot was discovery:
Almost the whole base was just a big colormix. Just the entities work. The mid area was almost ok. Only two or three textures were looking crazy. It was also strange, that the barrels in front of the base and on ice were looking weird and the other barrels in the caves were looking normal.
2. and 3. Screenshot was nolandr:
An opposite of the first screenshot, a little bit. The whole map was looking normal. Water (without reflective) was normal, too. But all entities are negative. Just the red playermodels are ok.