This seems pretty intentional. There is a sound that fires for every item that drops: click of a weapon, ding for a gem, bubbling for a pot, etc.
If everything sounded and dropped at the same time, it wouldn't sound right. There has to be a delay for each sound to be distinguishable.
Now the question becomes: do we like it...
I don't mind it. I enjoy the sound cues in game. That's how i find arcamon, usually.