Installed 64GB of Memory . . solved the problem completely . . except. If I run the same mission in multi-player, Meta Link, Rift S, it 'locks up' if I watch the bombs hit their targets. Same as before.
So, my next step is to uninstall the Rift S software and reinstall, and uninstall OpenXR and NOT reinstall it. I may have a separate issue with VR. OpenXR has caused me issues since I first added it. I hear that Meta has their own version of it in their software.
Marking this "Mark as Solution" Thanks everyone for their help.
Chopper A-10's post in Game Crashes If I Watch Bombs Drop, Look At Ground Targets was marked as the answer