I have a large model of all the significant structures of a frame that contribute to the mainframe stiffness with ~ 330k elements (solid and shells in separate subassemblies) and hundreds of rigid links (some simple, some advanced), about 30 weighted links, 300 beams, 8 adv springs, 30 lumped masses. I have just started adding load cases and have one simple constraint set and one load set. The "Begin Integrated Mode Error Check" step alone takes over an hour. I'm not lacking computer power nor memory, and I'm running on SSD. What is it doing in that step so I know what to do to minimize that time spend? And it's worth asking - any way to turn it off? I did find an error checking config setting that I turned off, but it's the same as saying not when prompted by default.
I ended up submitting this much later to the support team, and they confirmed there is no way around this lengthy check for my large model with many connections. They suggested I submit an enhancement request.
You can try by utilize the distributed batch over a server or a computer network.
I only read about this on ptc papers; I never used the program.
FYI for anyone who happens to look at this in the future - This went from over an hour in Creo 2 to a few seconds when this exact same model was analyzed in Creo 4. Seems to have been addressed in later releases.