Large rooms are created quite often, especially in the "racing" gamemode. Of course, hackers will always exist, which sadly in recent years has become sort of an "everyday thing" in this game. But now, in 2021, the rooms have also been filled with dozens, sometimes hundreds, of souris accounts that almost work like bots do. I'm not 100% sure which idiot lacks so much dignity that they choose to literally destroy ALL rooms with these nasty bots, but what I'm 100% sure is that people really have lost their mood for this game lately.
If you need to send a mouse to a certain location, but getting there with three angled grounds won't cut it, just do some maneuvering with another ground that is equal to M = 9999^2 × 9999999. I think M = 0/3 so let's take that. Which would put bring your total multiplied restitution to 299939973005999/7. In other words, just find a way to add more grounds but get you to around that, and you should break the speed limit, which would force you to stop at any ground. Though that's a lot more complicated than you may think, I may update the thread later if I figure out a pattern to that.