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Could you please tell specifically what happened every time you try to control your volume? For added info, you can also check this link. We'd love to know more details so we can start some steps. Feel free to respond to this thread.
Thanks for clarifying. If it is working better now, let's continue to monitor its behavior and let us know if you notice any changes. I'll consider this post as complete and will lock the thread in 24 hours. Feel free to start a new thread if you need assistance with your Google Nest speakers and the community would gladly help.