Issues with Email app from Edison Soft.

Hey all

I've ran into a little glitch / cache problem i think trying to reply to an email that is pretty long in terms of replies over forward over replies and so on... Using the app Email (best mail client out there :p ) 
It's the first time this happens and not sure if it's really SwiftKey problem or the combo with that app but when I switch to GBoard the typing lag disappeared so I figured it wasn't the email app struggling on that particular message. 
As I was trying to type a reply with SwiftKey and it was just way too laggy to use.

Anything I could do to send a log or something to see if there's a fix?

Cheers! 
Frank