These parameters will affect the render time and the quality of your images but it depends on your scene, so please do some local tests before submitting the job to the render cloud. Go to the 'Antialiasing' tab in the V-Ray render settings, where you can set the sampler type and the min-max subdivisions. Please navigate to the V-Ray render settings. Open your scene in Cinema 4D with V-Ray Renderer and open the render setup.

How to submit a job using Cinema 4D and V-Ray Renderer