I do not find that mine takes any longer than any other modern car I have owned. It is a few minutes before it gets going. If I had to guess, I would say much closer to 5 minutes than 10 and maybe even less than 5 if it isnt super hot. I have not tinted any windows yet, but I do use a WeatherTech sunshade. From experience, tinting with ceramic film as suggested above does make a very big difference. I also start the car before I walk out to it from work and that helps a ton. Having said that, the seats do take some time to really kick in. 5-10 minutes is probably accurate for those.
For reference, today was I think 102. We have had as high as 108 in the 3 and a half weeks I have had the car. Our weekend is looking like 110+. Some tips that I have found helpful are trying to park facing away from the sun, use a sunshade if the car will be sitting for a while (like over 30 minutes) during the day, make use of the remote start (especially since it is app based, you get unlimited range), and tint the windows with ceramic film.