When we're going to use a metronome or loop, I enter the same bpm value that's set on the mac. The TimeFactor will be too fast or slow. Sorry, I don't remember if it's too fast or slow. I just tap it in with my foot, and save the bpm to the preset for the day. If I understand the question about the displayed value being wrong; I don't know. I really don't know if the displayed value is different from the actual bpm in the TF. If the mac is correct, then the TF is faulty (and vice versa). This really isn't that big of an inconvience for me. It would be nice if I could just enter the bpm and things would match. But, it's no problem to take 5 seconds and tap it in. Assuming that you've calibrated the TF display, the mac is incorrect.