Ivan Sproule scored his fifth goal in as many starts to give County the lead in the 11 minutes from the break.
Second-half goals from Richard Brittain and Iain Vigurs completed a fine display after the break from the home side.
McCall said: "Fortunately I haven't had to talk about performances like that in recent months.
"In fact, I can't remember the last performance that was as limp.
"Ross County wanted it more. They played the condition of the pitch better than we did and just all over the park they were hungrier, that's not what you want to say as a manager."
He added: "You can't always guarantee good football or great play but what you need to be able to guarantee is that you can run as hard as your opponent and work as hard and do all the dirty bits, which I thought Ross County did.
"Any one of their players bar the goalkeeper could have been man of the match.
"Defensively they were strong. From our point of view we can't accept another performance like that."