BEPUphysics

I use 0.5 and 1 for times. Note that it causes permanent slowdown and i see that usually sphere collides to one or two triangles. I can just "brush" a bunch of triangles when controlling sphere to collide with them, then fly very far away and wait till framerate returns to starting, but it...

I have weird problem with drastic frame drop using StaticTriangleGroup... When the game starts i got frame time ~1ms, then when more and more collisions StaticTriangleGroup->Sphere had accured the lower the framerate goes... In the end i have like one frame in ~10ms and i shouldn't get so low fps ev...

Is it possible to not collide with backside facing triangles using StaticTriangleGroup? If yes, how that could be done? Thanks in advance