Some 4K TV are crispier than others. Kinda like not all HDRs are the same. I don't know the TV you are using but it might not be the settings. For example a $2500.00 4K TV will naturally render gaming graphics better than say an $850.00 4K TV.
Hey you Nascar lovers. If you would like to join a PS4 exclusive league, you can DM the owner, bigs_cup_series. He can test you to assure you are good and then its as simple as that, your in. Like I said, if you want in, DM bigs_cup_series