Idling problems 06 Vue

[Jdking463]

https://www.dropbox.com/s/khkry5wz2k...%20PM.mov?dl=0


So as you hear in the video the engine sounds very bad
It only does this through idling though
When you start driving the little metallic noise still remains though. Maybe a belt issue?
Everything else is fine while the rpms are around 1500 or so
Idling is the major issue. Sometimes the rpms will drop tremendously and the car will shake a lot and it almost stalls but still has yet to do that
I've recently gotten a full synthetic oil change last week and I've had the spark plugs themselves changed
Could this be caused by the spark plug wires? Throttle body? I'm not much of a car guy so I'd like to hear your personal opinion on what you think it might be. Thank you!