This is something that will help anyone if they are working on a complex design that is sluggish. Add
,skip_constraints=true
to the end of your project URL when loading. An example is…
https://tools.upverter.com/eda/#designId=c76ef019fd9d3d09,skip_constraints=true
Support told me about this a while ago but I didn’t know it existed and was surprised it’s not documented. I was just reminded of it from Elijah Parker’s post earlier when he mentioned that you can turn off DRC rules. You can manually turn of all the DRC rules but it takes a long time and additionally I don’t think it disables absolutely everything including maybe some built-in rules that don’t explicitly show up on the constraints page.
Hope this helps someone out.