In our talks with the Hopin developers they have advised us they recommend a minimum connection speed of 5mbps download and 2mbps upload. Ideally, they like to see 30mbps download and 10mbps upload or higher for the best quality. This impacts you more if you will be onscreen as a guest speaker.
Also, if you have smart devices in your home please ensure they are at least 3 to 5 feet from the device you are using to attend AllAccessCon events. These smart devices suck up the same WiFi signal your computer or mobile device relies on for a stable internet connection.