Continuing Fstorm testing and am really impressed. I'm using 2 gtx980's so it's quick but we're talking 20minutes is for a 4k final render. Very quick. I really like the ray limit feature. It seems to speed things up a lot without sacrificing much on the lighting quality.
The interface and controls are so simple which focuses attention on the creative process.
This was done while my son was napping in the afternoon.