For those with multiple Google Home speakers at home, it could be a hard time adjusting as now the volumes have to be adjusted manually in each speaker following a legal ruling.
After the US International Trade Commission ruled that it was infringing on Sonos’ patents, Google has already announced software workarounds including the “need to adjust each speaker individually instead of using the group volume controller,” and that users will no longer be able to adjust a speaker group’s volume with their phone’s volume rocker. It blames this change on “a recent legal ruling.”
The modifications appear to be a significant reduction to Google's multi-room audio feature, which allows you to synchronize speakers and have them all play at the same time. Instead of saying "Hey Google, set volume to 40% on Living Room speakers," you'll have to adjust the volume for each one individually via the assistant, Google Home app, or a Nest Hub display.
Google also warns customers that if their speaker group includes items from other manufacturers, they may need to be upgraded to the current firmware in order to continue functioning as part of that speaker group. Google's blog post concludes by stating that it will "try to minimize any further modifications."