not quite what i expect from the founder
well since I'm not in it for the money I have no need to bullshit anyone ;)
about the render: There are probably some things that could be done, tweaking sampling amount of light solvers, random sampler, more efficient materials, etc., but really, if you use portals for the environment light and HD cache, you are very near the optimal solution. It is natural for path tracing to have some noise after 10 minutes in interior.
PS: just in case, I didnt mean it that you fabricated the results, just that the results in different scenes/settings vary wildly