Agreed. Upshifts under power are smooth and fast. The more power the better. I upshifter at WOT all the time and it's lightning fast, the slowest part is just me physically actuating the shift lever.My TFC came with the TQS on it from the factory I believe. Your description does not sound like my experience. The shift is always super fast regardless of how hard you on on the throttle. I’d have the dealer go thru the steps again to assure a proper installation. I would try to be delicate and polite to inspire them to do good work for you. I’d ask to talk to the tech directly and share with him your concerns.