Our details: Archicad16, TeamWork16, Windows7x64 clients
We've gotten complaints from some users one one branch-office that work on BIM-projects. Not sure if the same happens on projects not connected to BIM. Ping time to BIM is about 40ms on average and the speed should be OK (1mbyte/sec tranfers both ways tested from that office).
I wonder if this might be related to large projects and that there is calculations going on within archicad.exe that locks up the system.
I also wonder if it's necessary to upgrade RAM when the archicad.exe processes seem only to use a small percentage of RAM.