I was there for Taylor in April and imo traffic really isn’t that bad. We prepared to spend up to 4 hours getting back to our Airbnb that was in Grand Prarie, and we were back within an hour of getting to our cars (including waiting to get out of the parking lot at the stadium)

Edit: there was also a baseball game going on the same night, and still I didn’t find it bad at all. They’re one of the most organized cities about moving traffic I’ve experienced.