Vray Volume Grid Issue in IPR,VFB / Can't see Vray Volume Grid In IPR, VFB. (3ds max 2022, Vray 5)

I was following youtube tutorial about Vray Volume Grid for making cloud stuff.

but they were using vray IPR and It was changing instantly. I usually use IPR by V-ray 5 Renderer.

The basic product rendering type show well. but the IPR is not showing any Vray volume grid things.

And I figured out that I have to change vray 5 to vray gpu 5 in Renderer settup. and it works.

There is no Vrayvolumegrid in render window when the renderer is just V-ray 5 . The Start icon in red circle mark looks like that in Vray5 render type.

 

choose V-ray GPU 5 when you want to see vray volume grid in IPR.

 

And now, you can see Vray Volume Grid in your IPR window. (The Start icon in red circle mark looks like that in Vray GPU 5 render type.)

 

When you can't see the Vray Volume Grid in IPR rendering,

You need to check the renderer in render setup (Press F10) if The renderer is V-ray GPU 5.