VRay IPR zoom view

[fco3d]

Hello,
I just upgraded to the latest version of V-Ray 5, and when using IPR render, the image is different compared to the regular render, even the screen.
I have one earlier version of VRay 5 and I didn't see this issue.
If I click IPR the render zoom in, then if I click regular render, it shows the same image I see in the viewport.
Your help is appreciated.

[3d-laboratory]

What is the difference between the images of the IPR and the rendered image? What do you mean with "even the screen" in your first sentence. And is the third sentence related to you second sentence with the older Vray 5? Do you use the IPR in the Fram Buffer window or in the viewport?