Hi!! It's definitely not intended to go any faster. It's a bug that was already present in the previous version. The framerate is tied to your monitor's screen refresh rate I belive. Or so I was told. I'm guessing your monitor has 144hz refresh rate?
I just recently discovered this and I have yet to get a solution.
EDIT: I uploaded a version with a tweak. I'm not sure if it fixes the issue though, because I don't have any extra monitors :P I'll have to ask around and confirm this. Sorry for the trouble man! D:
EDIT2: the new download should be okay. At least the animator of the game said his game is running at correct speed now (he had the same problem)