Originally Posted by
Dwill
When an encounter is designed, it's designed with an average item level that's meant for progression in mind which means that people overgearing the encounter/having the encounter of farm status isn't the biggest factor taken into account. The example you gave is one where people overgear the instance by a higher item level than it was designed for which leads to result you've described.
Honestly, I think this is a petty issue since it barely make the affected encounters that much longer.