PW speed

I’m looking for suggestions on using ProjectWise to collaborate with the rest of the team. Our internet speed causes us to take 15+ minutes to open a dgn file, so we are loosing time just waiting.  We cannot increase the internet speed so I’m attempting to come up with a solution.  What we are doing at the moment is creating our files locally (on our server) and moving them to PW.  To edit a file we check out the file, edit it on our server, copy the revised file to the C:\PW folder then check back in.  What we have found is the initial setup causes us to have to re-path the references, which takes a significant time opening 50+ files.  After the setup our process works well.  Is there a solution I’m missing that could make this go quicker?