Glad for you my friend. I have a 16 gig iPad II. I was quite pleased with iOS 6 and its derivatives. Didn’t like iOS 7 mostly due to the skin. But iOS 8 has been ...shall we say unfriendly. I will try your fix. I wonder... perhaps I am out of memory? Hmmm...
That's a possibility too. Check for your apps you have running. Then go into "Settings"/"General"/"Usage"/Storage-"Manage Storage" and see what your apps are actually are using up. the big things are usually "Photos & Camera" then larger apps and on mine "iBooks". Photos you can export to iPhoto on your computer or to the iCloud, but Apps you tap right in the list and you can delete them there. "Atlas.app" takes 1.4GB and "InfinityBlade2.app" is 1.2GB on my iPad. Delete as needed to make room.