Can i reduce this first time app loading time by using GWT d

[abhijeet_s]

We have product, who's front end is in GWT. As it contains many
classes (Around 150 menus, you can imagine now)

When user access this first time, it takes time to load. (If
bandwidth is low then this increases)

next time on wards it remains in catch, we dont have to worry about
bandwidth.

Can i reduce this first time app loading time by using GWT deferred
binding ?

(please dont mind my information of GWT if anything wrong, i am very
new to it )