I have a slim and have had no major problems.
Finished debt collector and everything is fine. Finished come fly with me as well.
SAME. Slim here, and I've never had those problems.
Every time I boot the game (press Play Game) I hold the Left Bumper, Right Bumper, and the X button until the title screen shows, to delete the game cache, instead of clearing the system cache.
Before the patch my system froze at least 6 times. After the patch, never. Doing the above may have been the reason. Whenever I can tell that loads are getting longer and longer, I save, shut off my console and turn it back on. Loading times are then back to normal. I've done this 3 times last two days. It works.