Everyone is going to be editing 4k like a champ. ALSO Final Cut Pro X doesn't even really edit 4k, it makes a proxy in the background, so even the Proxy is giving this laptop trouble.
https://www.cinema5d.com/is-the-new-macbook-pro-2016-fast-enough-for-4k-video-editing/
https://www.cinema5d.com/is-the-new-macbook-pro-2016-fast-enough-for-4k-video-editing/