I live in CV and think the traffic on 56 is great…
I commute east in the morning, and west at the end of the day, which is against traffic (typically, 56 west is bad in the morning, and 56 east is bad in the afternoon).
It takes me about 15 minutes to reach the end of 56 in the morning, and ditto to reach the 5/56 interchange in the evening around 6pm… There’s no problem coasting at 85+mph, minus the CHP’s. Unfortunately, there has been quite a lot of them lately,so be careful. There’s usually one parked right under the Carmel Valley Road overpass westboard in the evening.