Have you experienced system slowness or an app crash when using Hangouts video chat on your Chromebook? A bug report shows a possible issue that’s being researched for a Chrome OS 74 fix.
video chat
Don’t expect to record audio or have Skype video chats using Linux for Chromebooks any time soon
Sound support is still in the works for Linux apps on Chromebooks, but the first function will simply be that: Sound playback. Audio recording is slated to follow and camera access — needed for Skype video — isn’t even on the roadmap yet.