Although I’d argue there’s definitely some improvement when entering towns in 1.1.0:.
In my own very unscientific comparison, I played the same area on my son’s original Switch with the 1.1.0 patch and on my OLED without the patch, and to my eyes the patched version seemed noticeably smoother.(Still, at least I caught a bunch of the Violet paradox monsters to trade to myself later.) If things are improved, they’re absolutely definitely not improved enough.