Quote - I'm putting two info thumbs that warn about the issue, in case someone does want just tiny objects in their scene, and depth map shadows, to turn off casting shadows.  That way, if they get the same thing, they won't wonder what is going on.

Read my linked post. Two tiny objects ten inches apart - no problem.

Never tell somebody to turn off shadows. Instead, tell them to use ray traced.

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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)