Does anyone else have huge stuttering problems trying to use Amazon.com on an iPhone 6s Plus? This started a few weeks ago for me and it's not even usable. I was forced to download the app. For some reason I prefer the website to the app. I try to scroll down on the app and it take a second or more to catch up with my scrolling. I've restarted, restored and neither has helped. Oh and my home button is "crunchy" too. I think debris gets stuck in there. I blow on it and it's fine for a few minutes then back to crunchy.