https://www.pcgamer.com/sekiro-mod-unlocks-the-framerate-so-you-can-push-past-60-fps/

Sekiro: Shadows Die Twice has only been out a matter of days, but modders are already playing with its innards. One of them has found a way to unlock the framerate, letting you run it at more than 60 fps—provided you have a powerful enough rig.

The mod, posted on the Widescreen Gaming Forum by user jackfuste, is still being tested and might cause bugs, but it's letting some players run the game at more than 100 fps.