Meet performs quite poorly with large number of participants (the tipping point being around 10 or so for me) in a meeting. I tried various browsers and found Chrome to be the worst performer and surprisely Firefox was somewhat better but still needed a refresh every now and then. Macos on a 2017 MacBook. This is one of many reasons keeping my $employer on Zoom. We just haven't found a decent video conferencing software that manages 25+ videos flawlessly. I know of colleagues using Teams successfully but many people we meet with outside our organisation expects Zoom nowdays. I suspect any alternative will have to be very good to take over Zoom as the preferred platform. That has yet to appear.