IOS 11 Keyboard lag

Hi everyone,

I have an iphone 6s and ever since i upgraded into ios11 i've been having trouble with my keyboard (independently of the app I'm using, so i assume it's a ios problem). The fact is that the keyboard lags A LOT! I actually type much faster than the words/key pressed highlight shows on the phone. This includes symbols... i might finish typing my text (blindly, since the keabord doesn't react fast enough), and wait +/-3seconds before the whole text is shown in the screen... i never had this problem before (it's one of the things i've always liked about the iphone is how reactive the keyboard is with the auto correct and suggestions).

This is a really annoying problem. I've tried to switch off the different keyboard features (automatic correction,...) but i still have the same problem.

Is there a fix for this?

Thanks for your help