Same problem here. Ran the sim twice and that was it. First had the 6.7 shader issue, which I resolved, and now this. Went through all the suggested fixes to no avail. Nothing really of value to add to this thread, except to get the Asobo team to notice how many people are affected by this issue. I run out of Bootcamp and never had an issue with 2020. In fact, I am running the sim right now.