I’m guessing your issue was resolved after this much time, but I just had a similar issue when using a new switch. Mine was for about 45 seconds after switch power up and then intermittently for about 10 clicks, then all was good… until it did it again roughly 5 minutes later. I had set up the switch per A&H’s post, and basically disabled everything and was still having the issue. I setup a vlan on one of the ports for switch configuration only, leaving the monitors on the rest. I noticed when it clicked, the status light on vlan2 (control) would also flash with the click. I started wireshark and it turned out to be that the switch was putting out a DHCP query, looking to see if it needed an updated IP address. Once I set the switch to have a static IP and not look for DHCP, the clicks stopped and it seems to be rock solid.
Posting here in case it could be helpful to others with the same problem.
