When I said this my friend kept asking me "What did you feel then?". I said "What? Nothing special?" Then he said "Didn't you feel very scary!?!"(Taiwan highways are not so smooth including USA.) Then I told him "My Maxima has been installed Koni and H&R. So it is as stable as BMW..." (Now I think I should have said "as stable as M3!?!" after having driven many performance cars now.)
In my opinion like many Japanese cars this car had been designed by different philosophy(100m vs marathon). Of course GSF is more like running a marathon. The longer it runs the more people notice it. So who cares about the ranking within the first 5 minutes when running a marathon. By the way even though GSF is running a marathon, it's NOT much slower than those running a 100m or 500m.
You can see more details in the below...
https://www.clublexus.com/forums/gs-f-2016-present/907472-r-and-t-article-the-lexus-gs-f-is-the-future-classic-nobody-is-talking-about.html