Stick up camera, wired mode: rare update in dashboard

I have stick up battery camera, connected to a charger and switched to wired mode. It works fine, other than frequency of thumbnail updating in the dashboard. All other cams are being updated every 30 sec - 1 min, while Stick Up camera may update once each 10 -20 minutes. I've set Snapshot frequency to 30 seconds - no difference. Any idea what is going on? I did power cycle the camera, removed battery, disconnected the power, toggled the Snapshot on/off - nothing changes the frequency of the update. Device Health says the FW is up-to-date also.