Hi,
Probably simple reasoning but i cannot currently work out source of the problem- 3DS Max 2017, Vray 4.3, Fume Fx 4.1 - all latest full commercial versions.
Have a pre-prepared scene, with fixed physical camera settings... render time: 11 seconds.
Add a Fume FX Grid and a helper for example...don't even begin simulating anything... then delete the fumefx grid and any associated helpers, so should be back to where i was. Render time now over 1 minute.
Clearly the addition of a FumeFx grid is changing a system/V-ray render setting by default that is massively increasing the render time, but what on earth is it?!
Many thanks in anticipation for any feedback.
Edit: Retested- forget helpers or actually running any fumefx simulation- simply adding a grid and deleting it immediately after causes the 10x render time increase- it must change a setting...