I had an idea - add an option/checkbox to reflective materials to make them gaussian blur post process.
I realize this is not an accurate solution, but this will help speed up animations by avoiding high subdivision values on reflective materials and add to their quality a bit.
Perhaps that could be am optional render element?
Currently, a lot of people avoid glossy reflections altogether in animations due to the extra time involved.
Look here :
SurfaceBlur
I agree it will be nice to have something like this into vray…
Best regards…
Wow nice. Yeah something like that. Does this work with Vray??? Also, do I need to install this on all my slaves?
You need to install this on your slave…
but I had never used it with vray 
sorry.
Maybe you can tell me…
Trail is working with vray… so…
Best regards
this has been discussed already. This plugin is not bad, but it does not work in certain conditions: motionblurred objects, objects behind transparent/refractive objects.
However some sort of fake blur, that works with animation (not reflection interpolation) would be nice.
Even MR now has reflection interpolation, which works with animations.
I can’t get the plugin to work - at least it doesn’t in the VFB when enabled under effects with effects checked on in the common render tab.
this is one of the limitations, since its a post process effect it wont work with vray vfb.