Mix the cream cheese on medium high 4-5 mins until creamy.
Scrape down the bowl a couple of times.
Add the sour cream, heavy cream, vanilla, sugar, and cornstarch.
Mix on low until well combined, scraping down the sides of the bowl.
It should be smooth and creamy.
Add the eggs on low just until combined and finish mixing with a spatula.
Pour it into the cooled crust in three additions, alternating with the cinnamon crumbs. Reserve a few crumbs for the final cheesecake.
Bake on the lined sheet again at 300 for 12 minutes.
Reduce temp to 225 and bake 95 mins.
Shut oven heat and leave in the oven for 1 hour.
Crack door open slightly for another hour.
Remove and chill overnight.
Remove sides of pan and the bottom and place on cake board.
Decorate with frosting.