Thank you for the comment, we are aware of these bugs.
The controller lag appears if you have too many screens turned on, just a double screen is enought.
We will try to correct all these problems if we find some time, but we are still students and we are going for a 6 month internship so it will be hard to keep working on this game.
However, we might consider improving and continue it this summer.
I'll keep you posted !
Loved your video by the way :)