yeah it makes some lag when you make backups, but thats normal and you cant fix it..anyways if you have a fast machine it should take 1 min no more lol where is the problem?
l2 file edit is good enough for this things too.. you can basically open all system files and edit them easily. What have more of this the other stuff?
hlapex is not working because they closed like every packet that you send. So its basically impossible to cheat as well with it, or you must find new packets. (hard)