Minimum Internet speed for a Webinar host for

The number of attendees has no impact on the wifi. Your internet connection matters to the extent that you need a stable connection in general. If you are playing video assets that are in 4K you could experience issues if its a large file. For individual users with spotty wifi its best to leave their camera off so as not to drag on their connection. The best way to avoid wifi issues is to directly connect your computer via ethernet.