Emulator Problem: Really bad slow down inside games (PCSX2)

Okay, so I'm going to start this off by saying it's not my computer causing slowdown, here are my specs.

CPU: AMD 8350 Black edition, 8 cores at 4.00Ghz
GPU: Sapphire AMD HD 7850 Overclocked - GPU clock: 1025, Memory clock: 1250.
Ram: 16GB Viper Patriot Venom red ddr3 ram, 1600Mhz
Windows 7 ultimate 64-bit edition.
60GB SSD, 1TB HDD, 500GB HDD

I've tried running a few games, I'll list those:

Grand Theft Auto: liberty city stories (PAL)
Heros of Might and Magic: Quest for the Dragonbone staff (PAL)
Kings Field 4 (PAL)

non of these worked, and they were all official copies of the games from my own library of games.
 
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