I've heard a number of second-hand reports of sound quality issues, but just wanted to convey some practical personal experience: Try going to the vertical ellipsis (⋮) menu in the bottom-right corner of the Jitsi-Meet window, and select the "Manage video quality" option, then select "Low bandwidth" mode. This will disable video streams from all participants for you. You may have some luck with its "Low definition" mode, but for me I needed to just dispense with video entirely on the limited capacity system I was using. A short explanation is that the video codecs used by Jitsi-Meet benefit a lot from hardware acceleration. Many of us running open source operating systems may lack built-in support for these, and older/lower-end hardware can simply be overtaxed by it. When you run out of available CPU cycles to process the audio streams, they start to cut in and out. Closing other CPU-intensive applications can also help, or moving to a dedicated machine if you have the luxury. As mentioned elsewhere, modern WebKit-based browsers like Chromium do somewhat better at handling this, so switching to one of those for your conference window might help too. Further, the Jitsi-Meet mobile app is reported to get good performance on some smartphones. -- Jeremy Stanley