Here is my experience
the hack Yoonade that I use
the hack Mango v3.5 that I just downloaded 20 mins ago
I have 8GB ram, and it's not easy to make it LAG...
You can see that I didn't open a lot of programs and didn't use Notepad to open xt file.
Your method just makes X-trap not detect the hack "program". However, as i know, the reason that other regions cannot use Sd hack is not just about X-trap or Gameguard.