I just upgraded from 2019 to 2022 last week and I am having the same issue.  I open a company file and after a minute or so it crashes and shuts down or while the file has been open for several minutes and I have been doing other things I check back and QB is no longer open.

I also have my own accounting/bookkeeping firm and this is preventing me from doing my work.

I'm tempted to downgrade back to 2019 and forget about QB support but then I would have to manually enter all of the bank account details instead of just importing the QBO files.