Lamento traer decepciones pero personalmente ni idea, hace banda que no emulo PSX.

Peeeero, busqué en Google y encontré esto a ver si te sirve, de El Otro Lado:



Configurações do emulador :

Pete´s OpenGL2 2.9
1280x720
color depth : 32 Bit
internal X resolution : 2 Very High*
internal Y resolution : 3 Ultra high*
stretching mode : 1 scale to window size , keep aspect ratio*
render mode : 2 Use framebuffer object*

Texture filtering : 6 Extended+smoothed sprites*
Hi-Res textures : 2 STRETCHED*
Use pixel shader for PSX texture window emulation ( yes )*

Use FPS limit ( yes )*
FPS limit ( 10-200 ) : 59.99*

off-screen drawing : 2 Extended*
Framebuffer effects : 3 Full Emulates ...
Framebuffer upload : 2 Full ...

Screen filtering ( yes ) flicker fix border ( 0 ) FPS
Shader effects ( yes ) : 1 Fullscreem smoothing Shader level : 4 Maximum*

MDC filter ( yes )

https://www.elotrolado.net/hilo_como...ea-asi_1992567