This is probably the last thing you want to hear but the best way to achieve what you are after is this workflow:

Revit-FBX export to 3Ds Max-Vray

The amount of entourage available as 3Ds Max/Vray files is enormous, proxies for high res 3D trees, models from Evermotion etc, scanned 3D people from companies like Render People and AXYZ. Then there are the plugin like Forest Pack.

If you want a one-stop-shop workflow for photo-real rendering were everything is "in model" Maxwell isn't really the best option.

It's a nice renderer but still very "niche" in terms of a broader "ecosystem"

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hardware question :)

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Let's talk about Maxwell 5.2

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