Glad it worked with you.
We have similar problems. We noticed that imported IFC- file had made over 1600 difrent materials for each object. Does anyone know if that could be avoided?
Another problem was when we tried Purge all of those at once. Since we didn't wanted to Purge our own materials we selected all IFC-named material in Purge-dialog. Just checking the crossbox at once took over 5 minutes. It maked me wonder if there's a problem with Revit -dialog windows. I can't understand where else the problem lies. With over 1600 materials, just opening material - window from walls structure - window taked same 5 minutes. And to my knowledge it's just simple viewing procedure since nothing is changed yet. 5 minutes doesn't sound big deal, but just changing six wall-types to structural designers materials took me halv day. With Revit 2012 and earlier we never have had similar problems.
I have deleted all temp -files. On my computer graphic card driver is newer than Revit certified by Revit, but It has been same problem with all of our computers undepende of the craphic card.
