Seriously 3-5 minute repop on NMs?

[Abriael]

Well, there's actually a huge difference because it isn't much of a time sink if you only have to wait, for example, half an hour. Take an NM that pops every 24 hours, but you know that it will pop within a half hour window. It ceases to be a time sink. What is the issue with that?

The issue is that the spawn becomes predictable, causing severe overcamping, meaning that most people will have to still camp it for several tens of spawns to even get a shot at the mob, turning the whole encounter into a timesink.