I can't tell you about motorhomes, but we bought my wife's new to her car in Texas a few months ago (we live in Louisiana 20 miles from the Texas state line), and it took about 5 weeks to get the Texas title paperwork from the dealership and Louisiana plates. It was sort of an odd situation, it was a 2017 with 5,400 miles on it, owned by the dealership, but could not be sold as new due to having over 5,000 miles. I don't remember exactly how long it took, but I do recall we were getting close to the expiration of the 60 day temporary paper plates. As I recall the dealer warned us it might take a while due to the way Texas handles title paperwork.
