2. Make sure that you have a reliable Internet connection
Please position yourself near the router or, if possible, use a LAN, DSL or Ethernet cable.
Experience has shown that Webex has difficulties with transmission, especially with high numbers of participants and with participants outside Europe. If you have problems with the transmission quality, switch off your video and ask the participants to turn off their videos as well to reduce online traffic.
Also, closing your tabs, other browser windows and apps running on your device might help stabilize the connection.