I really don't understand this one.
I have an interior room. It's the same room, I go in there numerous times during the mission, but then recently I added a enemy group. As soon as the group appears and I enter the room, it slows down. And I mean to an absolute crawl. My cursor disappears, and everything moves so slowly, I can literally hit my arrow key, and it will take five to ten seconds for my character to move.
Has anyone else had this problem?
I just can't figure out why this one addition, which has never given me a problem on any other mission, or even other maps in this very mission, is slowing it down so much. And it's not even like there's a huge amount of detail in this room either. Most of it is stock scenery that comes with the map!