I turned it off in Firefox because it seems to capture EVERY key press and apply it to the search, obliterating assorted navigation shortcuts I have in place vi

I turned it off in Firefox because it seems to capture EVERY key press and apply it to the search, obliterating assorted navigation shortcuts I have in place via some add-ons. But, every without that, there's a noticeable lag in handling my typing, which is annoying, and I've yet to find a result I wanted before I was done entering all I intended into the search field. It's an issue with many AJAXy UI items; they are so busy trying to second-guess my every keystroke that my every keystroke becomes a burden to enter.