Will there be heavy traffic to Puncak on Sunday afternoon?

I’ve heard that Puncak can get really crowded on weekends. I’m planning a trip with my wife and will be arriving in Jakarta on Sunday, 9th February, at 1:30 PM.

We plan to head to Puncak after arriving. Since it’s a Sunday afternoon, I’m wondering if the traffic will be heavy or if it’s usually manageable around that time? Any advice or insights would be much appreciated!