V-Ray is commercial software (~$80/month or $470/year). Chaos Group is a private company that invests millions in R&D. However, they do offer legitimate ways to use V-Ray for free.
If you have a .edu email address, you can apply for a one-year free license. V-Ray is commercial software (~$80/month or $470/year)
Do not use C4D's "Render to Picture Viewer." Use the V-Ray Frame Buffer. If you have a