Am I missing something? I have installed the LogiOptionsPlus beta and the Logi Bolt, just to be able to use my new Logi M650 L on my Mac. The LogiOptionsPlus, as far as I can see offers me nothing. For example I have adjusted the tracking speed in the Mac preferences to max speed, but the mouse slugs along at a very slow speed and on top of that, with an input delay. This is the most expensive mouse I have ever bought and I had high expectations because it was Mac compatible and left handed. I am lost with this product. By the way, I am no newbie. I have been using Macs since 1995.