The glass shader(raytrace) in my project doesn't work properly.

[NiteVelan]

Hi to everyone. At some point, the glass shader doesn’t work properly. In the picture, you can see, that in sphere it doesn’t work at all. But if on object you have more then one slot for shader, it start work. But still, it works badly. Other object that have shader with masked or foliage or subsurface it’s just disapearing, as a tessalation. What I done wrong in my project setings? How can I fix it? I tried to find a solution but failed.

[NiteVelan]

I found a solution to the problem. Just opened DefaultEngine.ini and started to switch off all parameters one by one. And found these two:
(r.RayTracing.ExcludeTranslucent=True)
(r.RayTracing.Geometry.InstancedStaticMeshes=0)
They need to be removed or change parameter to the opposite.