I enabled soon after I started editing/validating because things were starting to get hung up then. And then later, I was validating some more, and was in the middle of editing a vehicle and it just froze up. That's when I posted here, and when the vehicle finally finished processing the edit (it literally took about 4-5 minutes for one edit), I checked the admin tools and saw that the blocker was stopped, so I enabled it again. Things did start moving faster at that point.