I have a few .mxd's that are opening incredibly slowly. So slowly in fact I thought I had stopped all of them from opening and 2.5 hours later one of them popped up on my screen. I figured like most times my older .mxd's open slowly, it was because of some broken connections, so I fixed the broken connections saved it as a new document and reopened. It is still opening very very slowly. Maps that I use on a regular basis seem to be fine. I am using 10.3.1, but my co-worker who has also tried to open the documents is using 10.2 and he is having the same issues. Access to some of these older maps is pretty important so I'm hoping that I can do something to reduce the open time on these. Has anyone else experienced something similar?