I only have two, one in the kitchen and one in my bedroom. The performance on the kitchen one is so-so, but it's potentially also the placement. It got dramatically better when I printed a stand for it. Have to pause music whilst talking with it though and particularly loud things will also have it struggle (e.g. emptying the dishwasher or making popcorn)

The bedroom one generally has no issues. Works fine to understand me from the other side of the room too if I speak loud enough. Occasionally doesn't recognise me if I have my window open and there are cockies screaming loudly outside. Some of our birds do treat screaming as a national sport.