Vray 3.6 envfog rendering fine on Vray RT cpu but nothing shows using adv when you have vrayHDRI in env slot

[CoastalVis]

Hi I have been adding some environmentfog to a scene using Vray RT cpu. Everything renders fine and gives good feedback etc.. When I try to render the same scene in Vray adv 3.6 latest version, I get fog when its in front of geometry but nothing when its over the Vrayhdri sky im using.. As a note the fog is quite alot dimmer than in vray RT too where you can hardly see it with same settings . I have turned on atmospheric evaluation in the settings and the effects, atmospheric effects in the common render settings tab. Is there anything else I am missing here?

[nikolay.kusht]

Could you please send us a test scene along with some screenshots to support@chaosgroup.com so we could further investigate this.