I was considering purchasing Parallels 17 for gaming, but I wanted to see if Fallout New Vegas was playable first. It's not. The game loops between the last two frames when you look at certain areas. The game doesn't crash, as soon as I look away it continues running like nothing happened. Unfortunately I've encountered this bug three times in the past two hours of gameplay and I am no longer interested in using the current build of Parallels for gaming on my M1 Mac. If this issue gets resolved I will purchase a Parallels license, but I've seen people posting about this bug since December of 2020 so I don't have high hopes.