Either a Windows update is doing this or SP 4.0? Anyone else out there with the same issues?
Never mind, I figured it out.
With 2020 SP4.0, they have added a checkbox under Options -> System Options -> Drawings -> Performance.
The checkbox, if selected, tells Solidworks to save all of the data necessary for detailing in the file. I had some complex helices in the model and this is what slowed everything down. Took me a day to figure this out - thanks for not mentioning this in the SP 4.0 release notes. I wasted a day trying to figure this one out
Retrieving data ...