If done properly the one click lag fix is in fact effective. The first boot after applying this fix is going to be really slow. I mean slow to the point where you will hear the boot sound long before you see the image or, possibly be stuck on the Verizon screen for a long time. If three minutes goes by and your phone is still not booted then do a battery pull and reboot. It definitely increases quadrant scores to the point that I went from a 911 to a 2298. I have also noticed a difference in the basic operation of my phone. It does not lag when unlocking and it runs smoother to the point that I will continue to use it (the fix I mean). Just know this,,,If you are going to do a nandroid backup you must first undo the lag fix. If you do not your phone will freeze while trying to backup ext2.
Note:Ibebyi is right, please when you have any questions please do a thorough google and forum search for any related topics before starting a new thread. There are far too many people starting an entire thread for subjects that are being covered in 100 different places. Even If you brick your phone do a search on how to fix before you ask in a new thread because I can guarantee at least 100 people have already done it. I myself used to be very quick to just drop a new thread whenever I had a question.