After trying GP Premium, we found that there is an issue with the logo when choosing to put it as centered before the main menu.
This will cause a major shift on desktop and Google CLS will be high. We tried on a clean install without any plugin and using different kind of logo.
We tried to do the same with Twenty Twenty official wordpress theme and the bug doesn’t appear with this theme. So I guess it comes from the way the image size is generated fist.