@feditips
Yes, if I correctly understand slow mode to mean I have to click on the "51 new items" at the top of my "Home" page to have them appear. That was the first click I did after several hours idle. The second click was on the "...", which resulted in the "rate limit" message.
(I think setting slow mode was what I did the other day to make it come back to the same spot I was reading when returning "Back" from drilling down into a post.)