Loved this game, but lots of bugs

Im addicted to this game, but its been freezing up on me!
1. Sometimes while driving Ill be unable to control my car...nothing works when I touch my screen. Resets when the race is over.
2. When the Forza ad pops up after a race, it freezes my screen and I cannot "X" out of it. I have to close out of the game completely and restart it. This has happened every time that ad pops up.
Im using an iPhone 6 Plus with the most updated iOS.

Sarah Ohhh about Asphalt Overdrive