WHATTT!!! My first conversion from Composer to SB usually takes about 20-25 minutes for a typical system with a PTX3, PTL4 some keypads, 4 zones of audio and a few dimmers.

From there, building goes a little quicker but can still be 10-20 minutes each time. Feels like 30, I haven't timed recently, but I'm just using the low end Dell that came with the Demo. Its really nothing to brag about.