Without the BIOS, the emulator doesn't know how to boot the game, read the disc image (ISO), or manage memory cards.
NFS: Underground 2 is notorious for menu lag and "choppy" performance. Use these community-recommended settings to hit a stable 60 FPS: Graphics Renderer for the best balance of speed and accuracy. Internal Resolution 1.25x or 1.5x Native need for speed underground 2 ps2 bios top
: Emulators like PCSX2 (PC) or AetherSX2 (Android) cannot run without this file, as it contains the instructions the emulator needs to mimic the PS2 hardware. 2. Best Performance Settings Without the BIOS, the emulator doesn't know how