I found a temp solution for me at least that removes the micro stutter when loading sites on Safari. This turn off Intel Graphics.
- Go to the Apple menu and choose “System Preferences” and then go to “Energy” control panel.
- Uncheck the box next to “Automatic graphics switching”
You can clear as day see the improvement on this site for example
https://www.redcafe.net/threads/there-is-no-light-at-the-end-of-the-tunnel.452045/
With Intel Graphics I get micro stutters when the site loads.
With AMD GPU the micro stutters is not there.
It would be interesting to see if you guys get the same experience here ?