Having the same freezing issue. It started after doing a in app update yesterday (update every Tuesday, so not sure when the issue update was pushed). Did the normal "need to close QB and restart to install update" but never did the "updating QB" dialog when reopening. Have tried all the QB tool hub fixes and allocating more RAM option, being that kind of seems like the issue. Haven't tried reinstalling completely yet but I don't think that will fix it.