Huge Time to Sync iPhone 11 with iOS v13.3

I called Apple and they said they would escalate it and someone would contact me. Never happened. But I think I figured it out what may have been the cause. Not 100% sure, but when I changed over to the new OS it defaulted to syncing everything. Now this doesn't mean it should backup everything every time, but it seemed to be doing that. So after I selected what I wanted to sync, it's been working better. So plug in the phone and open a window. When the info comes up, note the tabs "General", "Music", "Movies, etc . Click on each and make sure you're only syncing the data you want. If you have a lot of photos in Apple Photos on your Mac then it may be backing up everything each time the first time you move to the OS. This is just a guess. After I selected what I wanted to sync it worked better.

I did another sync this morning. I imported some pics into Photos and then sync'd them to some custom folders I set up. It was only 50 or so photos out of thousands that were already sync'd up last night. I started the sync about 20 minutes ago and it's not even half way done. Something is very wrong with sync on the new software on the iPhone and/or Mac.

One other thing to note. All the folders from "On My Mac" say "Syncing...." at the bottom of the folder contents. And in one of my larger folders of photos, I can see all the frames moving around as it loads in the photos. So it's absolutely re-syncing every single photo all over again. This is just ridiculous. It should only be syncing up the few new ones I added.