This guide is for general PCSX2 troubleshooting. Other settings, which were not mentioned above are best left at their defaults.
Recommended as its much faster and there is no risk of Damage The game Disc. Use ISO Image of the Games, don’t run the game discs.(Laptops - Intel) MAKE SURE your CPU frequency can go up to around 3GHz (on i3/i5/i7 processors) while you play (it won't always stay there, but it's important to make sure it can get there if needed).If you have dual GPU, make sure the external one is selected. (Laptops - Intel) MAKE SURE it uses the external GPU and not the Intel one.
This way the CPU will be running at it's Full Power. Make sure power settings are set to "High performance".
If you have a single-core CPU, most games will run slow. That means that if you have a 4-cores CPU, the maximum CPU utilization you'll see is 50%, and usually a bit less.
I’m mentioning some tips on how to improve Speed and Compatability while using PCSX2. I’ve seen a lot of posts and threads about PS2 games lagging, slow fps in games, and in some cases games don’t run at all etc.