PS1 Emulator (Playstation)

The best emulator is RetroArch (www.retroarch.com) and then use the Playstation emulation core, Beetle PSX HW (mednafen_psx_hw_libretro). To run games, you need to extract a PS1 bios (DOWNLOAD) in the system folder of the RetroArch directory. This core offers several enhancements, such as the use of Vulkan rendering technology, widescreen options without stretching the image, the ability to increase internal resolution, etc. It is also extremely accurate. For example, the dance game Bust a Groove, known in other emulators for losing synchronization of music with commands, does not lose sync in this core (Beetle PSX HW). Going to the core options (press F1> Quick Menu> Options), some recommended settings are:

Internal GPU resolution: 16x
Dithering pattern: internal resolution
Widescreen mode hack: On (for fully 3D rendered games)
PGXP operation mode: Memory only
PGXP perspective correct texturing: On
Texture filtering: nearest
CD Access Method (restart): precache