I'm using Vegas Pro 22 Build 93 (Win 10) and I'm constantly running into the same two issues:

1) In many clips, there's suddenly a single dark green frame (not visible if I watch this clip outside Vegas). It's usually somewhere when two fade into each other.

2) Many clips with motion simply stand still on the first frame as I play them back. I checked the playback rate, it's what it's supposed to be, plus these clips play back fine outside Vegas.

Before upgrading to Vegas 22, I used Vegas 19 and never had these issues. I tried to worked around it, but this is really trying my patience now.