Device is sending 1K identical IGMPv3 messages per second, and device is offline

I have a medical device that will try to join a multicast group. I have wireshark running on a pc on the same vlan and can see the IP address of this device sending ~1000 igmpv3 membership report/joins frames per second.

Ok, could be defective, but I'm told the device is powered off and I am not able to ping it.

These igmpv3 messages appear to be exactly the same.

It seems these huge amount packets are being bounced around in a loop. Is there such a thing a multicast loop? Other devices are fine.

Thanks