Appreciate the feedback, and not to mention the engagement! Yep that was a real mess. A new version is now up, with a completely reworked collision box system, and improved bot behavior + a bunch of other small adjustments like gradual boosting. You may need to do a hard refresh of the site (Ctrl + F5). Latest version is 0.14.
Oh, and I also added an FPS counter in the upper right corner.