Google has confirmed an issue with its premium Home Max smart speaker. The problem in question, affected users say, causes WiFi networks to be killed, which means the router/modem requires a hard restart to bring the network up again.
Going by reports on the official Google forum, most users who are affected by the issue are using a TP-Link Archer C7 router.
One user even got a reply from TP-Link engineers over the issue, indicating the root of the problem could be MDNS multicast discovery packets that are sent to keep a live connection. Apparently, Home Max is overloading the router by sending thousands of these packets in a very short duration of time.
A Google Products expert confirmed the issue, saying they are looking into it. Those who want to help the company debug the problem can send feedback report from their Google Home app. Here are the details: