Sorry, but without specifying what car and especially what tyres that is largely meaningless. In fact, regardless of the car, if that is on any kind of racing tyre then that is, for someone who claims to be a "good" driver and "no rookie", quite embarrassing.
Sorry, this proves nothing. As much as I
love Gran Turismo - I have all main titles, bought all my PlayStations for GT (and a GT branded PS4), and even, somehow, have two copies of GT4!? - the target times in licence tests, mission challenges, etc, are laughable and the AI is, and always has been, at best a joke and at worst a bit of an insult.
I get it though, GT wouldn't be the sales-monster it is if the targets it sets were far beyond the abilities of the "casual". But thinking having "finished them all" means you don't suffer from "newbie fails" and makes you in any way fast, when compared to real people, is more than a little delusional.
Sorry to be the bearer of bad news but I'm afraid you're still not quite the driver you apparently think you are either...
Thats 1:36.003. in a WRX. Using a DS4. With right stick throttle/brake*. And auto-gears*. In cockpit view.
*I messed up my right hand when I was younger so find holding the controller and using triggers, in the manner required for a racing game, gets quite painful after a while.
Look, I'm not saying I'm mega fast - I'm usually ~1 sec off the pace of the top 10 in the dailies using the meta - so I'm not trying to be arrogant here but you claiming not to be a rookie suffering from "newbie fails", posting that Nurburgring lap time and then that video, is quite, umm, bold.