I too find the traffic visualization to be hard to read. Seriously why do you show me traffic coming the opposite way of my route? It's not relevant at that time, hide it and focus on what is most pertinent to the task at hand. Ie only traffic info on my routed path in the direction I'm going.
The traffic updates are too slow to be all that useful to me. I find myself validating Tesla's info with Google more often than not.
Overall I'm not very impressed with Tesla's nav package