I'm only running the client on the Veeam server itself, don't have it installed anywhere else. Pretty small shop... four VM hosts, 6 sockets total. It looks like the Veeam ONE Monitor Server service is what's crashing, as when the client goes non-responding, if I close the window and "quit", then try to run it again, it can't connect to the service. And if I then try to restart the service it errors with "Windows could not stop the Veeam One Monitor Server service". So I have to reboot to get it running again. I'll just open a case.