Applies to: All audio interfaces
Discord are aware of a problem that can cause audio to glitch or cut in and out on their Mac app. This affects all audio interfaces on the market, not just Focusrite audio interfaces.
For more information please see Discord's article here: https://support.discord.com/hc/en-us/articles/360040580711
If you're having audio issues using Discord on Windows, please see this article instead.