blender (bf-blender, tuhopuu is different) isn’t using ODE from what I remember
I said that SUMO could probably be used to detect collisions for ODE, which would probably be faster than the current [Opcode/ODE] collision routines. THe licenses would allow it too
quickstep is pretty quick, run the test_crash demo to play with it
[with it off it can take several minutes to do one frame [default like 10 iterations I think]]
note: if built in windows test_crash will probably cause the stack to get full when quickstep is turned off. This is because the stack size is fixed in windows, where in linux it can expand even into virtual memory. the function stack is used somewhat to traverse the connections [collision points] between the blocks.
I have a build of test_crash somewhere, maybe i’ll find it
[if you tweak it so there are fewer blocks it will be less likely to crash with quickstep off]