I don't think you understand what we're saying. Even fairly expensive commercial bandsaws WON'T reliably resaw 12" deep stock without very careful and expensive setup, fresh special purpose bands, custom blade cooling, custom dust collection, etc.
It's not going to be a little slow, and a little wavy and require some surface prep. It will end up wrecking blades while making wood completely unusable. I did some 10" deep Sapele on a big 24" saw at a woodworker's guild shop near where I lived, and it was so tapered and wavy that I had to scrap it.
I have since bought my own Rikon
10-325 14" saw, and mostly use it for resaw, but I found that it's really not good over 9" deep. It simply can't run a wide enough band to handle the chip removal. The next move up would be a much bigger Laguna Resaw King that's custom built for that... But that's a big cost jump.