Slow tgyping response?

Lately I have been receiving a slow response to my typing in the Comcast

e-mail.  I am getting almost an instant response as I type this but in the e=mail program there is a pronounced delay.

Is there something I might have inadvertantly changed or a new feature from Comcast meant to give you a more frustrating service?

I am using a corded keyboard.

Thanks for any help.

McM