I'll jump in before all of the "I've never been inside of Thor coach, but I hate them" posters arrive.... We had a 2017 Quantum that was nearly flawless in the 2.75 years that we had it. As to the 5 Star tune, Thor has absolutely nothing to do with the driveability and computer settings in the drive line.
The 5 Star tune has been discussed over 10K (yes, ten THOUSAND) times. If you go to the Ford chassis forum, there are probably no less that 10-15 active threads at any time.
https://www.google.com/search?q=%225...earch=irv2.com