I think that if you wait for the database cache to be implemented then this problem goes away because the sync will be MUCH faster basing off of the cache rather than actually looking at the providers themselves.
I've personally started to use the mounts themselves to sync rather than going directly to a provider because that mount does in fact have a cache. I will warn you though that while it is much faster to 'check' because of the cache, there are currently some bugs around retries related to the mounts as well. So YMMV.