I was playing the chapter "Red Letter Day" and during the escape part while you are making your way through the train tracks, the ones AFTER you have to leap on the top of the train to get onto a ladder and go through a ruined house. It does not matter if I am using 7.1 or the latest crossover games build the game lags down so bad I would say maybe 1 frame per second at the most or maybe 1 frame over multiple seconds. This happens a few times and I think it has to do with playing the train horn noise or something because it happens only after that point but not before. The game recovers and is at the normal speed once it goes away, but when it is happening the game is unplayable. I can attach some screenshots if you don't know the spot I am talking about.
I am just wondering if anyone else is experiencing this.