Noise with opacity in groundplane and VRaylight

Hey,
i have some weired render noise in my alphachannel, when im using an VRayDistanceTex in the opacity of an VRaymtl.
It is fading out the alpha to the horizon. When i’m adding an VRayLight (Planelight) and set it invisible the alpha of the plane area is very noisy on the Lightsource position.
My attached example are 480x270, but i also had this problem with 4k renderings.

Did someone else have/had this problem?
I can send the max-scene if needed.

I am rendering with Max2026, CPU, with VRay 7 update 2 hotfix 2 (7.20.04 build 00000)
The GPU(RTX4070) renders fine.

In the Version 7.20.00 i had the same problem.

noisy Alpha: (left and right hand side of the cube)


Greetings

Tamino from VISIONSBOX​

Switch the VRayMtl’s opacity mode (VRayMtl > Options) to “Normal” and it should be fixed.

It’s fixed! Thank you!