Hello everyone 
I took the liberty of editing and preparing a scene shared, Timeless
http://forums.abvent.com/t/4-white-walls-3-lights-1-mirror/311/6
… And really render time is very large, especially for a scene of 23 mb 
At the end, I share is a result
regards
Pedro
okay! Now if, ready
I really surrender, losing battle 
2 days trying to enhance the scene, but nothing
… It must be that I’m tired 
No achievement lamps edit my models, I pretty difficult
Render IN 3 modifies all the editing, you should increase almost all values
The render time is critical, I think we should improve a little cooking times, at least half would be ideal …
Sorry for the result, we are at another time will
I need to evaluate more, all parameters
regards
Pedro
