Comment 10 for bug 1843092

We've just confirmed that the slowdown is correlated to the auto-save time: Adjusting the autosave time down to 5min means we see these slowdowns every 5min.

Interestingly, as Madeliene noted, we don't see the back file notification dialog that would normally be present. She also notes that there wasn't previously such a severe delay when saving - it looks like the file saving process somehow got slower.