13.1 seconds for first place seems a little fast, no? Or is there some sort of timing calculation that I do not understand?

The 13.1 runs are indeed oddly fast, but I use a frame timer so I can confirm it's accurate. You can double check using this: https://slashinfty.github.io/yt-frame-timer/

I don't think there's any glitches involved with those runs but idk this game is weird.