I was able to keep bridge controller in my NAM folder, but it required removing a couple of "additional" bridges. I think it may have been a street bridge and maybe something else, but I forget exactly. I've never missed them. I had been using the old version from aspyr on my computer with several tweaks, and so far, I am not sure there is a whole lot of difference in performance. I'm still playing with it, tho, as I just found out about the new aspyr release. I also learned about dat packing and dat packed everything, including NAM even tho I read where some people say do not do it. I use my computer on trains without internet, tho, and without dat packing NAM, no internet connection meant a crash. Not sure why. Everything seems to be working, tho. I am missing a couple of buildings that worked on the old aspyr version, but they are in the plugins, so not sure what's going on there.
Edit: there is definitely a performance improvement