I did not make this program . I only recently discovered it and it has improved the performance of GW2 on my computer, especially in cities and WvW.
It does many little things to help improve your game's performance like:
(1) shuts down unnecessary processes while playing
(2) shows you what and where to update all appropriate drivers related to gaming (not just video)
(3) defrags your game files (only defrag HDD)
(4) runs diagnostics to help you figure out how to get more performance
I trusted it was not a keylogger because it was editor rated on CNET. Free to download.
Picture of Simple To Use Interface
Download Link
Game Booster - CNET Download.com
Hope it helps!