Since upgrading to an Apple Silicon Mac running Monterey OS with a Dell 4K screen, Indesign has become sluggish when scrolling through documents, especially those with placed images.

Also, if I highlight text and make a change to the formatting (make it Bold, for instance, or apply a different paragraph format) the change does not appear until I deselect the text. It will show up correctly before I deselect the text sometimes, but more often than not it doesn't.

InDesign version 18.0 with the latest updates.