Okay so i was told to get it im just making sure i already am getting it

[Bositman]

Everyone in this amazing thread is helping you properly, the issue is you either don't understand what people tell you due to misinterpreting or you just don't want to understand because reality is not on your side

"Your cpu don't meet the recommended single threaded performance for most games(especially 3d with many moving objects)
The recommended STP score is 1600 but you cpu score is 1259"

another person said
"2nd. STP stands for single thread performance. If your CPU falls under 2000, then it can suffer from lag with certain games (ie, 3d games are pretty demanding). Yours is around 1240, which is really low."

Ofcourse you would know all this (and also the GPU system requirements apart from CPU) if you bothered to read the readme, which in some magical way ALSO lists demanding games as well.

https://github.com/PCSX2/pcsx2#minimum

[masterpaul]

what is avx2 exactly? do you need it?

[jesalvein]

it's an instruction set.
pretty standard nowadays.
It's not "needed", but if you get a cpu that is recent or even 3 years old, you'll get AVX2