Generally though this discussion more applies to curvy two lanes where it may not be possible to maintain 55-65 MPH. If the road such as 395 carries a 65 MPH limit, it is usually not needed to pull over and let people pass. There are usually adequate sight lines, passing lanes, or divided highway sections which take away need to pull over. And often the road can be driven fast enough in an RV not to accumulate as many cars waiting to pass. Maybe in the past I've had to pull over on a 65 MPH marked stretch in CA, but I can't think of any.
It's been mentioned, I'll repeat: I suggest allowing all faster traffic to pass in a passing lane, even if you have to slow down a bit in the right lane.
Where I can think of the opposite is something like Ortega Highway. Marked at 55, frequently driven at close to that or above in passenger cars. But uncomfortable or impossible through some of the turns in an RV. Personally I like to keep speed moderately steady on these roads, and don't accelerate hard out of turns and brake hard into them to get a few MPH extra speed. I do find myself driving a bit faster than I normally would to avoid building up cars as fast and having to pull over excessively. All a balance. Best is just be patient with yourself, use turnouts as needed, and allow some extra time. Once you get the hang of it, it isn't a big deal.
One other tip: If you can find someone to follow that is going about the speed you like to go, just follow along. It isn't your problem at that point. You're not the leader, and not responsible for the hold up.
