Here is a blog article I recently published on my learnings and experience with improving the scrolling performance of a UICollectionView. For OS X developers here is a great WWDC video on drawing and scrolling performance optimization techniques for Mac OS X.
Here are some suggestions. If you can log into the account please change your gmail password. Choose a strong password. I would also suggest using 2FA that is Google will ask you if you are ok with validating the account with a cell phone number. You can configure gMail to call or SMS you a … More How to protect your gMail account when hacked?