KevinE started following EN extremely slow after Win 10 Fall Creators Update (SOLVED)
I am having the same problem. I never would have thought of attributing it to the Fall Creators Update but now it makes sense. I have all the same symptoms. I have tried your first 3 things in your list. I still have the problem. I had a huge database file (Just under 10 GB). Now I have turned on "Purge rarely viewed note content" older than 180 days and enabled all the Synch options including On Demand. Now my database file is 375 MB.