Some things you can do to have jQuery Mobile run a bit faster on Android devices. Basically you are disabling some CSS and other functions. YMMV

jqm.css

* {
text-shadow: none !important;
-webkit-box-shadow: none !important;
-webkit-border-radius:0 !important;
-webkit-border-top-left-radius:0 !important;
-webkit-border-bottom-left-radius:0 !important;
-webkit-border-bottom-right-radius:0 !important;
-webkit-border-top-right-radius:0 !important;
}

jqm.js

   $(document).bind("mobileinit", function() {
       $.mobile.autoInitializePage = false;
       $.mobile.defaultPageTransition = 'none';
       $.mobile.touchOverflowEnabled = false;
       $.mobile.defaultDialogTransition = 'none';
   });