Does Blitz check for collisions if you don't ask?

It only checks for collisions if you have collisions set up, and even then they go undetected if you don't call UpdateWorld once per loop. The downside is that UpdateWorld also updates animated meshes.

EntityShininess makes no difference at all to the speed of your game.

Graphics3D 800,600
box = CreateCube()
sphere = CreateSphere()
camera = CreateCamera()
light = CreateLight()
MoveEntity camera,0,2,-5
MoveEntity box,-3,0,0
MoveEntity sphere,3,0,0
EntityType Sphere,1
EntityType Box,2
Collisions 1,2,3,1

While Not KeyDown(1)
	MoveEntity sphere,-0.1,0,0
	UpdateWorld() ; Try commenting out this line
	RenderWorld()
	Flip
Wend