ESX is in a development phase so some games are still buggy, you can check the compatibility list on this page.
Game is running too slow?
Although ESX does not require a high-end system to play games, but you need a powerful GPU and the latest processor to run them at full speeds. Make sure that your PC is up to date with the latest hardware and drivers.
Which games are playable?
Simply download the latest version from the download section.
Extract the emulator and “run it as administrator.”
Configure ESX settings like graphics, controls, audio, etc. according to your hardware.
Insert your PS3 game disk into your drive or you can use an ISO image.