Older 32-bit CPUs lack SSE2 instructions. The default mupen64plus core might lag. Switch to the parallel-n64 core (Rice video plugin) in the game's advanced settings for a 10-15 FPS boost on legacy hardware.
A curated selection of PlayStation 1 and Arcade (MAME) titles. Scraped metadata (box art and video previews). System Requirements Batocera 32gb Pc 32 Bits
However, there are some limitations to consider: Older 32-bit CPUs lack SSE2 instructions