General

the time stops then goes on after SC they dont spawn 3hrs after the sc

12 keys so far

idk i found few red monsters back when event started seemed like you had to be on map for them to spawn

and seemed like at spawn time it gives people 10mins then stops spawning them most unused maps dont have the red mobs on them at all unless its around the spawn time... but idk

if you want signs of people not being on the map... i will give you a good one that adds to fact i may be right about this
i have ran into about 10~15 Rare monsters on unused red monster listed maps while trying to get a few red keys so i dont have to hunt them every day...

Maybe exactly right before the severs went up, every single monster is killed "reset". So maybe the next respawn is 3 hours from whenever the game went up.

i havent been finding red mobs lately as well