The 32-bit build is specifically optimized to breathe life into legacy hardware (often 20+ years old) that cannot run modern 64-bit operating systems.
Extremely old Nvidia GPUs paired with 32-bit CPUs may perform better on batocera 32gb pc 32 bits link
Ensure your PC is set to Legacy or MBR mode if it's too old for UEFI. The 32-bit build is specifically optimized to breathe