My firm has recently gotten intersted in working with digital red lines. We are exploring ADR 2013 as a way to do this as it seamlessly integrates into Revit, which we use for all of our office projects. However, in the tests that we have done, the DWF/DWFX files which are created take a very long time to load (up to two minutes) and, once they are open, take a very long time to switch to each sheet (more than a minute). Once a sheet has been visited, that sheet seems to be cached, and it is very quick to return to, but that initial waiting time for each sheet makes this workflow a non-starter, especially with a document set of 90+ sheets. PDFs and other image files (ones of even greater file size) open in ADR 2013 fine and going from sheet to sheet is quick. It's just the DWFs and the DWFXs that take so long to load and go through. I've tried just about every export setting from Revit I could think of to no avail. I've also tried this on three different computers in the office. Any suggestions as to what I may be doing wrong?