Vive Unity OpenVR SDK bad quality in play mode

Dear developer community

We are developing a Unity Game with Oculus and Vive support.
Currently, we have a problem with the Vive Integration.
We use the SteamVR Plugin version 1.2.0 and The Lab Renderer version 1.0 we also tried it without the Lab Renderer.

For simplicity, I will post a few pictures.
If you start the Game W/o any VR SDK it looks like this
Puu.sh Without SDK Screenshot

When we add then the Oculus SDK it looks like this...

Vive Unity OpenVR SDK bad quality in play mode