system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do computers struggle to emulate Playstation 2 games with a graphics processor that's better than an actual PS2's?
gpt
Modern computers don't understand the instructions in a PS2 game. So they have to translate the instructions from MIPS  (the machine code used by the PS2) to x86 (the machine code used by PCs) in real time. 

And you know how some words don't translate exactly into a single word in another language? Computer languages have the same problem. And console games in particular are often dependent on quirks of the specific CPU in the specific console to work properly.