I've been solo-ing A2 in Inferno and so far so good. However, whenever I enter Lair of the Witch(Maghda's room) everything immediately becomes choppy,slow, and can barley execute my abilities(5-10 seconds delay). When I teleport out, in the city or do something else everything runs fine(in the same game). It's just in that area. I've had no crashing issues or disconnection.
FPS- In Mag's room: 1-2
Everywhere else: 26-30 (I set my Max FPS to 30, to try to cure the problem)
Latency: I enter my MS is green (100)
Right now inside Mag's room I'm currently at High-Yellow(564)
I read the Low pref. post I hope this is everything you need. If you need additional information I'd be glad to help.