My first animation in Corona. Actually first 5 seconds of animation I have ever rendered, so I’m looking forward to any suggestions ;).
PT+PT 1280x720 30-40min/frame
Beauty and volumetrics rendered separately and comped in AE.
I had to blend 3 frames in a row in AE to get rid of terrible flickering that was only on refraction pass.
Beside all the problems, I’m happy with the final result. No high expectations cause it’s my first one and made only for tests 
The animation looks really great! Well, maybe except the 3d people, but let’s say it’s a limitation.
I think it could be optimized further, sorry that I didn’t take a look at the file yet. I am still interested in optimizing.
Yep those 3D people are terrible… But for architectural animations nothing much better is a need 
I’m still loking forward to Your help i’m really curious what’s causing this refraction flicker… let’s say that i just tried anything that could work, and nothing worked in Corona. I’m suspecting some modeling issues, because it is a simple CAD import. accidentally I found a solution for flicker in post with after effects
still lot to learn but i think it’s a good starting point.