Dude it might me that the Drivers aren't compatible with Windows 7 and anyone who can't undo that I feel sorry for you and me... because most of those drivers are what accelerate and optimize the computer's performance.
The computer I'm currently using has an ATI Radeon All-In-Wonder 8500DV [Old & my Laptop charger isn't working] and its driver isn't compatible with Windows 7 and Direct 11 isn't much help either -it comes with problems- also I tried to install Windows XP from Windows 7, no dice.
Also You may need to Change your Performance/ Page File to programs or Use the SpeedHack from PCSX2 0.9.7 rather than 0.9.6 which does have it, besides that your Graphic Card & RAM are way good.
PageFile Accelerate [Windows 7 Settings]
Start > Right-Click "Computer" > Click "Properties" > Click "Advanced System Settings" > Click "Advanced" > Click Performance "Settings..." > Click "Advanced" > Click Adjust for best performance of: "Programs"
PageFile Optimize [Windows 7 Settings]
Start > Right-Click "Computer" > Click "Properties" > Click "Advanced System Settings" > Click "Advanced" > Click Performance "Settings..." > Click "Advanced" > Click "Change..." > Click "C:" > Click "Custom Size" > Type in 4095 or the less than the Max into Maximum and/or Initial size
PCSX2 0.9.7 I don't know if its compatible with Windows 7, though I uploaded the Link I should try it out on the Computer I'm using, but I don't have a rom...or do I need one in order to see if it works?
PCSX2 0.9.7 +Plugins -Bios.7z Its r3113, I should rename the File.
The Current Computer I'm Using Specs
MS Windows 7 Ultimate 32-bit
Intel Pentium 4 CPU 2.40GHz
1.0GB RAM
Standard VGA Graphics Adapter
The best way to solve your Speed issues with emulators and became an AEU, is to play with the Settings and look for the the Update. I found PCXS2 0.9.7 by Googling "PCSX2 0.9.7" I figured there would be a update when I had PCSX2 0.9.6.
Funny I was talking on another forum about getting FFX, I hope you enjoy playing.