Material editor settings

Is there a way to control the Vray settings in the material editor preview besides using a custom object/scene?

I’m looking for ways to control the QMC sampler and adaptive QMC sampler settings.

There is currently no way to change these settings, other than to turn AA on and off from the material editor options; the material editor uses the following settings for the DMC sampler:

Amount: 0.95
Noise threshold: 0.01
Min. samples: 5
Subdivs mutliplier: 0.5

Best regards,
Vlado

Thank you for your reply.