2016 2nd owner not sure if that TSB was ever done. I do note a tendency for quick gear changes making LC fill sluggish but it matches my driving style for around town, never in a hurry. Thing I notice most is when you lift off gas to slow down and then get back on gas their is either a lag or abrupt jerk motion as trans finds a new gear. This experience is even more noticeable in first 4 miles or so of driving as things have to warm up. Once for about 2 weeks I drove with PWR button pushed. It definitely changes the shift points and sluggish feeling goes away. I did this however as just experiment and went back to normal mode. I now only use PWR when I pull my boat.
I still need to take my in for recall work and I will have that TSB checked at that time. Not very found of the Round Rock Toyota service department but it is close.
I am middle aged and for around town driving I am very cautious. I am never in hurry I break for yellow lights. I signal lane changes and usually give way. For highway driving I am in top 5% fastest vehicles on road minus constant lane changes. I willing to wait for someone to move over. I ride right except to pass.
To me it is 3ton comfy people mover not race car I drive it as such.