Crashes and general instability of MU4.0.2 (Win10Pro, 22H2)

Good morning,
I report on a general instability of MU4 with permanent crashes, hangups, high CPU-load and memory runaway.

The freeze occurs as soon as I click into a box, e.g. a text box, it does not depend on a specific file, page size, or design. There seems to be a general issue with mouse interaction, fonts, and graphics. My system on that computer is really big enough (see below).

At present, MU4 is completely unusable with such instabilities.
That's quite a pitty, because MU3 was already good and in wide use, but with such instabilities, MU4 probably will loose its users...

OS: Windows 10 Version 2009, Arch.: x86_64, MuseScore version (64-bit): 4.0.2-230651553, revision: dbe7c6d
on a Dell Precision 5750, 1TB internal HD, 7 TB external harddiscs, 32GB RAM, Windows 10 Pro 22H2, build 19045.2728