How is that post wrong? Diablo III isn't a particularly impressive game from a tech perspective, and I get plenty of random drops and stutters on my HD7870 and i5 2500k even when there aren't that many enemies onscreen.
Especially Rakkis Crossing in act 3 still has unresolved FPS issues that Blizzard just can't seem to fix
ontopic: honestly, if it only drops below 60 FPS in really demanding situations but is otherwise a solid 60, it was the right choice.
Not like Infamous, TLOU remastered, or any game on PS4 really doesn't EVER dip below 60 - which is exactly what's happening here.
An Action RPG is something so dynamic - you can literally kite 30 mobs into the same screen to force the framerate to drop while on the other hand be smooth sailing throughout an entire playthrough if you're lucky.