Limitation from gyazo, if you want to upload gifs with a higher framerate use a tool like sharex. As far as i know, 60fps is available to gyazo pro users.

ShareX can do anything, if you know how, change the proper settings and you will mostly get what you want. But since I don't have the time to fine tune every setting, I switched back to gyazo. Ffmpeg is supported by ShareX and the tool does offer many customisations, so you can nearly do anything.
You can find enough documentations if you search it up. Keep in mind that all image-hosts have limits and with 60fps you mostly exceed this limit, except of course you selfhost a image-host.

problem found?

Zu