In the tradition of my original "Moving CAN be interrupted then resumed" post, I realized another time saving rule that I had overlooked.
If more than one investigator is required to perform a horror check versus the same type of monster, they all use the same horror check (i.e. you do not have to use the app three times if a single deep one is on the board sharing a space with three investigators - just start one horror check and all three roll against that horror check requirement and result).
This certainly reduces the amount of clicking required during the mythos phase - especially as the player count increases.
During the horror step, each investigator resolves a horror check against a monster within range by selecting the monster from the monster drawer and resolving the effect generated by the app. • If multiple monsters are within range of an investigator, he resolves a horror check against only the monster with the highest horror rating. • If no monsters are within range of an investigator, he does not resolve a horror check. • If multiple investigators would resolve a horror check against the same monster, those investigators all resolve the same horror check.