ODST Floodfight Season 8 Bug?

I was having a lot of trouble enjoying the new floodflight. Most of the enemies would stand in one spot or not even move out of their spawn zones. Basically meaning you had to track them down, sometimes I would be looking for almost 5 minutes before I found another group of the flood.

What I was really expecting was the flood to be constantly chasing after you, that is what I want to see. And when I played the multiplayer floodfight I never once found the flood. Really disappointed, anyone else run into this problem?