I use RetroArch, and fairly new to the system, the built in ps1 emulators are as follows. "Beetle PSX HW, Beetle PSX, PCSX ReARMed, and SwanStation." In the Parasite Eve 1998 Emulator category these cores seem not to exist so if i were to speed run should I download the accepted emulators or are the cores in RetroArch an updated version of the listed Emulators?