Can someone do a favor for me: open the stock Messages app, open up one of your ALREADY EXISTING threads (dont click "new message"), and try to type really fast. Is there keyboard lag? For me, there is a lot of keyboard lag. It's so slow that, sometimes the autocorrect box does not pop up in time, and I'm just typing freely without corrections. This is very frustrating, and if anyone knows a fix for it, please let me know!