I've been developing GWT apps for over a year, and without any doubt, they are the fastest running apps I've built compared to everything I've built using regul

I've been developing GWT apps for over a year, and without any doubt, they are the fastest running apps I've built compared to everything I've built using regular javascript / AngularJS. My clients have also used terms like 'insanely fast', 'runs like native' (on mobile), etc referring to sites done in GWT. I've used adwords a little bit, and it runs fine for me. The only slowness I can think of is when you request keyword / bid data and it fetches it from the server. That takes a while. But for that, it probably has to query a gigantic dataset on the server, and that's probably the reason for the slowness. You can contrast that with Angry Birds' html5 version, which was also written with GWT.