Lightroom CC is unusable in its current form. Despite patience on my part, I am greatly frustrated by the spinning circle and frozen screen that appears either at start-up or within a few minutes of start-up. I have a near 1TB of data that I am synching to the cloud, but progress is painfully slow, a few photos after a restart perhaps before the dreaded freeze.The only diagnostics of note is the CPU running at 100% +, my normally quiet and cool Mac Pro is anything but and network traffic is 1 or 2 packet a second (possibly not even lightroom packets). It looks like the culprit is the Adobe lightroom CC helper process. Any thoughts or suggestions?