Hello, I just installed Vegas Pro 15 on my machine and loaded up a project I had given up on while working with Vegas Pro 14 because I simply cannot use the video preview. When it's viewing clips I've taken on my iPhone X at 4k 60fps, it's a horrible stuttering mess that I can't use at all.

I'm using build 387. I thought I read somewhere that this was supposed to be fixed with VP15?