I have a Windows 10 machine (Dual Xeons-it's a Dell Precision 7910 Tower), 64GB RAM, using a Quadro K5200. This issue only started a couple weeks ago. But AFX CC (latest version) suddenly stops playback of any kind. I can manually scrub and see results. But neither the spacebar or "0" produce any playback, despite the entire sequence showing green. No idea what I am missing. I have Purged All multiple times and rebooted to no avail. After a reboot, I'll initially get some playback. Then suddenly it stops and I get nothing. Ideas?