Air con-power loss VY

[Aryashahin]

when ever i turn the air co on-idling or driving i can feel a considerable amount of power loss, especially when driving. The engine also work a bit rough, I can feel the vibration on my steering wheel.

is this normal on VY [ VY II calais S/C ]
thanks in advance

[fasamr]

check out compressor bearing!!!!!!!!!!!!