A funny phenomenon happens to me. Does it common?

Hi there,
I am new to jMonkey. Recently I was trying to make a vehicle run on a track. I found out that the fps is very low at that time. However, after I scale the track 2 times larger the fps increased significantly.

The upper one is the track with the original size.

Can it because that the mesh is smaller, therefore more collision detection on every update loop?
Correct me if I am wrong.

Yeah it should pretty much be that. More triangles fall into the range of checking for the car.

Also I would suggest replacing that hull your car has with something like a few boxes in a compound collision shape. The fps gain can be unreal as hulls with more than 6-8 vertices tend to perform really poorly (which is probably why you had those 11fps in the first place).


Thanks for your advice.