I have to say i don't even have a 4k tv or laptop. I have a Hero 4 silver and doing this was fun to try. I must say it was difficult. VERY few programs will even edit a 4k file. I only knew of GoPro studio that would. Auto file importer works great but will not upload 4k. I had to remove memory card and use thumb drive adapter. Then with youtube formatting it took forever to upload, and longer for 4k to pop up on channel. I'm no pro editor but here is my first attempt. Just like anything new 4k is interesting topic
https://www.youtube.com/watch?v=vgdH42uFAg0