

You are using the WebRTC stack that’s why. It’s done by your browser. Bad quality, low stability ,not secure. Plus WebRTC can be used by malicious site, by default you should disable it. Nope I am talking about videconferencing software like Webex, …
It depends about what you plan to do with your computer it’s not the best music, graphisms, streaming, …even if there are solid improvements. Usually you will get more chance with an old device than a brand new one.