[treeman79]

Might be more fun to only check so often ir somewhat random ally. Human nature often it takes a moment to realize something is off.

Bear walks into tavern. Some panic, others are slower to react / notice. A very drunk dwarf might never notice, or offer a beer to the bear.

[hinkley]

Different tick intervals based on perception would be funny. And practical.

[JohnFen]

And realistic. Our perception of time is constantly varying IRL.