I have a 2018 MS 100D and I'm on software version 2022.44.30.5. Yesterday I drove from Bluffton, SC to Charleston, SC and attempted to use FSD for the trip. Most of the trip is on Highway 17, a lightly travelled, mostly 4 lane divided highway where the speed limit varies from 50 to 60 mph. This section of the trip is about 50 mile drive. Even when there were no cars within a quarter mile of me the FSD repeatedly insisted on moving from the right lane to the left lane. After a dozen times I cancelled FSD. Does anyone know why this behavior occurs?