Found this firmware on one of the forums. Looks like it has lots of optimizations, but the website is in Spanish.http://www.archosgamepad.es/#!update-microsd-mod/cl48
Looks like these are the features:
Removing unnecessary applications but in Google Play (Plus One, Maps, Streets, etc ...)
Elimination of the Chinese character keyboard.
Editing the startup logo.
Upgrade all Google applications and Archos (browser, videos, music, controls mapping, etc ...)
Added Black Market (Market alternative).
Improved performance of RAM, CPU and GPU. (NOVA 3 without any LAG) Tested with Google purchased game Play
Improved performance of application launcher.
Improved performance of the wifi (better speed and stability).
Improved memory change (when using the USB cable to pass data by removing the microsd just have to re-connect the cable to access the memory of the tablet)
My USA Gamepad will be here in a couple days, and I'm looking to fixing some of the native problems.