When asking it to explain a concept that you don't understand, after posing the question itself make sure to tell it which parts of the concept are causing confusion. That will help it tailor the answer, and better explain it.

Just bear in mind that compressing a video using the same codec (which those sites seem to do) will always reduce the quality and/or resolution, although it may not be noticeable.

It depends what you're using it for, but 64GB of RAM is probably overkill and the faster CPU will probably be more useful. Make sure to get one with an SSD.

Note that before you can do this, you first need to turn on Live Captions in the accessibility settings in Chrome.

This means that Chrome, Firefox and Safari now support all Groupworld features except for sharing audio from browser tabs (which is only supported by Chrome, but users with Firefox and Safari can listen).