Yes, the in-game video/voice system is notoriously awful. Most people use a third-party system, such as Discord. However, there are steps you can take to rule out some issues that cause problems. I'm sure someone will be by soon with those, perhaps that will help. Edit: Nevermind, here it is: <a href="https://wiki.roll20.net/Solving_Technical_Issues" rel="nofollow">https://wiki.roll20.net/Solving_Technical_Issues</a>