This guy does an amazing job on his videos, his testing on many multiplayer hit registration / netcode is great.
GSync
https://www.youtube.com/watch?v=F8bFWk61KWA
Fast Sync vs VSync
https://www.youtube.com/watch?v=L07t_mY2LEU
Hopefully he can get some AMD hardware and test out FreeSync as well, though it should be very similar to gsync. First person I've seen test this since Linus Tech Tips when gsync/freesync first came out.
GSync
https://www.youtube.com/watch?v=F8bFWk61KWA
Fast Sync vs VSync
https://www.youtube.com/watch?v=L07t_mY2LEU
Hopefully he can get some AMD hardware and test out FreeSync as well, though it should be very similar to gsync. First person I've seen test this since Linus Tech Tips when gsync/freesync first came out.