This is taken from the emulation wiki site:
Nintendo 64 libretro core is based on Mupen64Plus and its plugins but with heavy modifications. It introduces many features and optimizations not present in mainline alongside RetroArch's general features, including Project64-style overclocking for faster framerates
I don’t see this overclocking option on any of the N64 cores. The only thing they got is the usual VI refresh option all N64 emulators had for a long time now and it doesn’t do much, neither works like the PJ64 overclock option.
PJ64 has a % overclocking option for the CPU and it actually works. You can play Goldeneye at steady 60fps with no stutters if you want.
Is the wiki wrong?