Hi Marco,

please have a look at Octane web ( https://render.otoy.com/octanebench/results.php?v=3.06.2&sort_by=avg&filter=gtx%201080%20ti&singleGPU=1 ), your graphic card has very good bench mark results, so you can try Octane and compare it to Thea Render, your test in forum are very useful. (+1)

Octane is excellent fast render engine ( https://home.otoy.com/render/octane-render/ ), it has predefined materials, of course, and rendering settings is similar like developing photo from raw file. For instance Octane has predefined colour settings according the most known film materials, (Agfa, Kodak, Fuji) and Octane use node editor for creating scene and materials, so it can be advantage for you as well, maybe.

Max and Zarkow use Octane as well ;-) , but your render via Thea and 3D Coat are nice as well, maybe it will be useful for all of us to start new thread "Rendering, tips and tricks", where we can share rendering and MoI settings or general experiences with rendering sw under one thread "roof"

Ciao
Mik