Some are blaming the extra tedium of submitting under 41F.
I've been following a couple of places where they're tracking how long it's been taking to get a Form 1 or 4 processed...
We're starting to see July
There were a steadily increasing number of submissions from when 41P was announced and a huge surge of submissions just before the deadline, wait times seem to be increasing by about five days per calendar day of submission!
I suspect at least a few, perhaps many, are waiting for the surge to be processed to assess the wait times before buying.