Limit entity velocity

[douira]

I believe there was a discussion about what may have caused a server lag/crash event and one suggestion was that if there's an entity (such as a player) that has very high velocity it would cause a lot of collision checks, to the point of degrading performance. The suggested mitigation was to limit maximum velocity.

Idk whether this is useful or whether that was actually what caused the problem, but I wanted to put this here so it doesn't get forgotten if it's still relevant.