3 ways that I'm aware of
1. Some plugins have this feature, but I wouldn't rely on Minehut to have one because there are other ways to change it.
2. The randomTickSpeed gamerule does affect this, not the best way but it does work
3. Although the best way is the spigot.yml folder, (Don't quote me on this, I'm not exactly sure) there is a hopper section in the bukkit.yml where you may be able to disable the cooldown when it's full (Therefore meaning they won't be constantly full)
Note I haven't done this in ages so some of the information may be incorrect or worthless
Good luck!