@thorr69 Great find! Now i can use verbose logging.

[INFO] RetroArch 1.8.8 (Git 9552f87)
[INFO] Redirecting save file to "/home/pi/RetroPie/roms/neocd/Fatal Fury 2.srm".
[INFO] Redirecting save state to "/home/pi/RetroPie/roms/neocd/Fatal Fury 2.state".
[INFO] === Build =======================================
[INFO] Capabilities: NEON VFPv3 VFPv4
[INFO] Built: Nov 2 2020
[INFO] Version: 1.8.8
[INFO] Git: 9552f87
[INFO] =================================================
[INFO] Loading dynamic libretro core from: "/opt/retropie/libretrocores/lr-neocd/neocd_libretro.so"
[INFO] [Overrides] no core-specific overrides found at /home/pi/.config/retroarch/config/NeoCD/NeoCD.cfg.
[INFO] [Overrides] no content-dir-specific overrides found at /home/pi/.config/retroarch/config/NeoCD/neocd.cfg.
[INFO] [Overrides] no game-specific overrides found at /home/pi/.config/retroarch/config/NeoCD/Fatal Fury 2.cfg.
[INFO] [Remaps]: remap directory: /opt/retropie/configs/neogeo/
[INFO] Redirecting save file to "/home/pi/RetroPie/roms/neocd/Fatal Fury 2.srm".
[INFO] Redirecting save state to "/home/pi/RetroPie/roms/neocd/Fatal Fury 2.state".
[INFO] [Environ]: GET_LOG_INTERFACE.
[INFO] [Environ]: SYSTEM_DIRECTORY: "/home/pi/RetroPie/BIOS".
[INFO] Core requested VFS version >= v1, providing v3
[libretro INFO] Using front end provided VFS routines
[INFO] [Environ]: SET_VARIABLES.
[INFO] Content loading skipped. Implementation will load it on its own.
[INFO] [Environ]: SET_INPUT_DESCRIPTORS:
[INFO] [Environ]: SET_PIXEL_FORMAT: RGB565.
[libretro ERROR] Invalid CUE sheet: Index 0 is not allowed with pregap.
[libretro ERROR] Could not open CUE file: /home/pi/RetroPie/roms/neocd/Fatal Fury 2.cue
[ERROR] Failed to load content
[INFO] Content ran for a total of: 00 hours, 00 minutes, 00 seconds.
[INFO] Unloading game..
[INFO] Unloading core..
[libretro INFO] NeoCD deinitializing
[INFO] Unloading core symbols..
[INFO] [Core Options]: Saved core options file to "/opt/retropie/configs/all/retroarch-core-options.cfg"

My cue file is correct, i open it on FBNeo....any ideas?

EDIT: I´ve removed PREGAP 00:02:00 line from .cue and it works in neocd and fbneo.

Is this make any difference for neocd emulation?

@Darksavior Yes, it's annoying. I know about the FPS bug, I tested the patch and it's ok. There are a few more bugs besides the FPS counter that were fixed after 1.7.8.4, we'll see if the PR will bump to the next release or include the patches.