D4 crashing after updates over past couple of weeks (post VOH)

Lucky to get 15 minutes gameplay before the crash (white screen to desktop) - and at that, there are some 5-10 second pauses during gameplay.

Win 11
Asus ZenBook
16GB RAM
Nvidia GEForce MX250 (am on the 561.09 after reverting, which was recommended on other VOH crash threads)

No crashes prior to the recent updates. I have NOT purchased VOH as with the crashes occurring there isn’t much point.

Thoughts? Suggestions? Get a new system?..