I was just doing a test render - I stopped it at 340 samples (area wise). Obviously it would have needed to cook way longer than that to remove the grain.

Really I don't expect to ever use Cycle in minutes. But I am delighted to get great results from an overnight render that literally could not be matched in FireFly no matter how long you gave it.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)