Well that's running as well. In fact, when I turned it off for Malwarebytes to run, it says it will turn itself on again after a while.
Again, I've tested writing in a new Compose box, and it's okay. When I'm in reply mode, that's when it's impossible to use.
So, here I am with it not having been too bad for a while and now quite useless.\ - sometimes the delay is 7 seconds for two letters typed!!
I'll have a bash with Geeks, but some seriously clued up pals have no idea what's happening. It's so consistent, and on all computers.
I'm not enough of a geek to have messed with the settings. They're more or less 'out of the box' for OS and program.
I've got some heavy issues to cope with at the moment, and all I need is to type slower than writing with a crayon.
I'll lug my laptop around to a pal's house and try there.