typing lag

[Jeffreyyyyy]

On my S3 most if the time when I type on the keyboard for a text or anything else, my phone lags a lot. It mainly started after I got 4.1. Anybody know how to fix this issue or know why its doing this? I've tried restarting, pulling out he battery for awhile then turn it on and try it and it still lags and its super annoying. If anybody knows how to solve this please tell me, I would really appreciate it.