Forest 5.07 BUG:
No Forest with VRay Motion Blur switched on. 5.05 works fine.
Switching rendering mode from "Automatic" to "Mesh" turns Forest render able, but memory consumption explodes into unusable regions.
Just switched my whole render Farm to 507 to be 3dsmax 2017 compatible. This sucks.
SORRY, just found out, issue is already known.