Project Raptor 3.0 has just been released. It required Project Raptor 2.5, and Patch for 2.5 to work properly.
There will also be a low detail weapon.ini that will come in a zip file, you if you are one of the people who is having problems like overheating then you will use this file instead.
When you install the mod, unzip the ini file to:
Generals Zero Hour Directory/Data/INI
NOT TO Generals Zero Hour Directory/Data/INI/Weapon
Download it Here