Viewport slowdown if Vray Shader is applied.

V-Ray V-Ray for Maya Issues
1

In Maya2020 we have extreme slowdowns if we assign a Vray Shader to the scene. The framerate drops down from 300 to 5 in some cases.
We assume its caused by the reflection calculation in VP2.

Is there any way to turn off reflections in shaded mode (shortcut 5).?

2

Try the suggested here: