I tested with my friend too. That's three PCs having the same issue in that particular room in mineshaft. I was just concerned it was my hardware, but looks like it isn't.
OK! So I tested Natural Selection 2 on my Surface Pro, to see if I could replicate the issue. (Obviously very laggy, but I was just playing for sake of test)
Even with 4 fps, I ran through the hallway with all settings on max w/ dx11 and…
Ok so i found out that if I turn off atmospherics, the issue goes away.
But the other thing that bothers me is that it seems I'm the only one having this issue. If it was everybody with the same settings that had this issue in this parti…
Perhaps better optimization would be needed for the bot mode to run at least smoothly. It is unplayable with anything over 8v8, and graphics settings do not change it.