No, Jeff you’re right. Sorry to waste everyones time, I should have had a look at this before posting, because I mis-remembered how it works.
The User item is in Display Format pop-up in Project settings, not the Frame Rate. (anyway, nothing changes the speed of the video relative to the project speed.)
Also, as Jeff said, if the video is indeed not playing that’s a separate problem.
Also, I’m going to delete the image…