Unplayable Lag On Phobos Missions

[BizarreFetalChimpanzee]

I go on many runs with a friend of mine quite often and neither of us experience much lag, if at all. However, when we go on Phobos runs, I end up with lag that is so intense that whatever level we are on becomes virtually unplayable. I have a pretty good gaming rig, so that shouldn't really be the problem, and my net has been reliable for many of the other multiplayer games I play (tf2, bf3 etc). I am unsure if this has to do with how the AI work on Phobos or another problem entirely, but I'd like to know if A. other people are having the same issue and B. if someone could look a bit more into what may be causing the problem. Thanks.

[Flaming_Snake]

This is a known issue with the Phobos maps.

 

The majority of people suffer this problem, and PC specs as far as I know have no effect on improving FPS.

[IronRushBR]

Flaming is telling the truth.

Phobos is very great but has serious framerate issues. Seems to be when many enemies respawn at one time and/or not die.

[BizarreFetalChimpanzee]

Ah. That would make sense, then. Especially with the movement of the Hellions compared to how much they spawn, I can see how that would lead to extreme performance issues. I usually run this game around 60fps maxed out but once I go to Phobos, I may as well be playing on a dinosaur computer.