Rendered viewport doesn't update itself when changing displacement properties

[bardo]

As title, you need to change to "Solid" mode and go back to "Rendered" to see the effect of the changes of displacement properties.
Or detach and attach the vray bitmap that drive the displacement.

[milva.perkovich]

Thanks for bringing this up. Just wanted to let you know that the issue you’re experiencing is something we’re aware of. While we don’t have an immediate fix or timeline to share right now, please know that it’s on our radar.
Thanks for your patience and understanding!
Cheers!