I see people fighting about render engines and programs. Personally i dont even care about  Rendering. So i don't even use rendering.

Maybe good for backgrounds but i dont really care. I use the lowest settings, so that i can render in 1 minute.

Preview mode is the way to go. I mean who cares. I dont care about rendering.

These days Preview mode is better than ever. It's near render quality so why waste time rendering.

You can add shadows by hand painting them later.