HomePod mini lags

I know but it’s unavoidable. With zoom you’re communicating with more servers, your device to wifi to HomePod (via an Apple Server to use iCloud) , then the Zoom server and each person you talk to also doing this. When you see guests on the news using zoom, the same thing is going on. See: https://support.zoom.us/hc/en-us/articles/202920719-Meeting-and-phone-statistics

You can close affected Apps and browsers. Restart your device and reboot the wifi

Unfortunately that’s how YouTube is, especially if you pause. It even does that when not AirPlaying to anything.