i dont think there is a "basic setup". It really depends on what you want to do.. As a general rule i advice to turn off reytracing and displacement usage, shadow casting, any extra feature unless you really want to use that feature, since the rendering time jumps with those set. I also advice to use min shade rate 2, pixels sample 3 for test renderings, and max of 1024 texture size. For final render of course everything should be set for the max amount; 0 min shade rate (not only in the rendering setting, but also in the bject itself!), 36 pixel samples, raytrace, shadows displ. set, end any extra feature if you use them. Post filter 2 with sync sounds to be good. But asking even only approximate rendering time is i think you shouldnt do since that really depends on the scene/settings/machine power (in this order)