gravity, collision problem

[ymj000131]

When I enter '-forcecpu' at the set launch options.
US2 works very well (but it's laggy when I open Solar System, make rings, impact at the slow time.)
However when I turn off '-forcecpu', US2's objects' gravity don't work.
Even They don't collide each other.

● I reinstalled US2 already.

[DrSauce]

That's what I have with my OpenCl bug. That's exactly what it does.

Guess what, I have an nvidia card too.