Version: recent releases, including 131.0
System: MacBook Air, macOS Monterey 12.3
Firefox has degraded over the last few releases. (Sorry, I know that's vague but initially I thought it was just a temporary glitch and didn't note details.)
* Activity Monitor shows Firefox and Firefox CP Web Extensions each running at very high CPU percentages
* Often have to click twice to select an item. It's as though the first click is lost.
* Pages are very slow to paint initially. A good page to see this on is
https://www.carolinescooking.com/malabar-prawn-curry-shrimp/
As you scroll down the page you often have to wait about a second for the blank space on the screen to be drawn. Often this is for an image, but the images are all less than 250kB so it's not due to huge download. And in any case ...
* When you at last get to the bottom of a page and then scroll backward to the top, it's still slow to draw the page content - with one-second delays -- even though all the text and images have already been downloaded.
We don't have the same problems with Chrome on the same pages.
