E.g.: I drive an Opel Corsa-e, and I usually have cruise control at around 100 km/h in the winter, 110km/h in the summer, and I stop every 150-200km to charge up to ~90%. I fully expect a Tesla to be faster, but I'm curious by how much.
I don't bother slowing down, I drive as fast as I can get away with (and safety). Except once I wanted to one-shot a long distance and put the car on autopilot behind big trucks. This way my range about doubled. In fact it's often better for range to follow the fastest biggest car, than to drive slower but with no one in front of you. Think "150kmh behind a pickup truck gives more range than 110kmh pushing air alone".
It usually charges from 5~20% to 40~70%. If you're optimizing to minimize total charge time, you should aim to charge from 10% to 60%.
With "quickest arrival" setting, ABRP does 4 stops with a total charging time of 1h25min (and 8h29 driving). The stops are 28, 18, 18 and 22 minutes respectively.
You can do it with 3 stops, and perhaps even in 2 stops during the summer and limiting speed, but then you spend more total time charging.
I like the 20 minute stops every ~2 hours. We travel with kids so the bio-break and leg stretching is appreciated. We leave in the wee morning hours so we arrive at the destination in the afternoon and avoid some of the traffic.
You can of course also empty the battery from 93% to 8% (drove that yesterday) after 212 km when driving at max speed of 188 km/h (3C avg. temp)