Hypixel Skyblock has a harp minigame/quest. By getting 100% accuracy on songs in the harp, players gain extra intelligence and for one song, an epic talisman.

However, the harp's margin of error for clicking the notes is quite low, meaning that players in regions that have high ping, like myself may find that the harp is significantly more difficult, or even impossible.

My solution for this issue is to allow a bit more time for clicks to register for high ping players. Only allowing this for these players will also make it still fair, as this extra time will not be given to players with low ping.