VrayRT not updating with simple changes

[stevesideas]

I have an issue where I use blend materials on a displaced piece of geometry. Quite often I can make simple changes on the 2nd coat layer and nothing updates in the VFB when using VrayRT.

Using version: 3.50.04. Max 2016

[tashko.zashev]

Hi Steve,

Would it be possible to attach a scene file for this RT problem?