VFB not cleared issues Vray 5.005

I have experienced it since installing 5.x:

I render a sequence of frames (with the “render selected” option) and the frame file is saved with the previous frame still in it. So If I render say 5 frames - I will eventually get a frame with the 5 frames one on top of its previous frame.

This has caused me hours of needing to render full frames instead of only the selected geometry ( I am talking $$$…)

Win10
Vray 5.005
3ds max 2021.2 64bit
128 RAM
AMD 32/64 cores

This is the default render mask Selected behavior. You can bypass this by setting the Previous render mode (Settings>System>Previous render) to Clear. This way the VFB’s image will be cleared on render start.

THX !
Did not know that one.