Slow terminal and office writer when typing?

Just installed Trisquel on a 8GB Ram laptop and wondering if anyone else has had this problem. The install went fine but there's always a brief time-delay when I'm typing on either the terminal or the writer program (I forgot the name, could be LibreOffice?)

Basically if I hold down the letter a to type "aaaaaaaaaaaa" it won't type in real-time, it will delay for a bit, so after I take my finger off the button it will carry on typing for a second or so to "catch up" with what I've typed. I'm not really sure why that's happening, and I tested out a different distro where I didn't get the problem. If it was a low spec PC I could understand but at 8GB ram and with the problem not occurring on a different distro, I don't know.

While the easiest fix is to just use the distro I don't get the issue on, it isn't a fully free one, and that's important to me. Over the last year I've gradually moved from proprietary to free and this is the last hurdle. Anyone help me out?