TC lets you put the power down more easily. With TC off, you have to baby the throttle a little. It’s really about being easy on the throttle / brakes. You may want to mess around with your settings / deadzones on the brake / throttle pedal as well. I’d say your results are to be expected and it will take some practice to equal those med TC times. With both of those assists on you can be more abusive on the pedals and not pay the price.
PlayStation 6? I’m assuming these are movies and not actually rendered by the PS5? The cut scene quality, that is more of what I would expect from next gen. It does make me a little disappointed in how the game looks today while racing, hardly a difference.