Hi Senthil,
the resources in the static zip are the same, so on which server are they deployed? What does the browser's network monitor show? Are the single requests faster or slower? Are there more or less requests (single files vs preload files!!)? Are they cached for one, but not for the other server? Is there a proxy involved that also does caching? Are the UI5 versions the same?
A view at the network tab should quickly tell you what's going on when the difference is so significant.
Regards
Andreas