Been a user for over a decade, PPSSPP is a solid emu...
HOWEVER... I built a copy for Linux today and discovered that Silent Hill Origins STILL shows the weird flashlight bugs/glitches 🙃 after all these years... there was a fix at one point but was lost to evolving builds a long time ago. People always say use skip buffer effects but that breaks other stuff... I'm thinking it has to do with stencil buffers... that tweak option has been absent from normal PPSSPP for years but I think when I actually go grab my Gold copy, it's available in there...
Anyway, it plays PSP games. Hrydgard's work is good. 👍