tried now with metal slug, no problem, are you sure the romset is correct?
Below is the log.
Attempting load of mame.ini
Parsing mame.ini
Attempting load of mame.ini
Parsing mame.ini
Attempting load of horizont.ini
Attempting load of raster.ini
Parsing raster.ini
Attempting load of source\neogeo.ini
Attempting load of neogeo.ini
Attempting load of mslug.ini
Starting plugin data...
Starting plugin hiscore...
Starting plugin layout...
Attempting load of mame.ini
Parsing mame.ini
Attempting load of mame.ini
Parsing mame.ini
Attempting load of horizont.ini
Attempting load of raster.ini
Parsing raster.ini
Attempting load of source\neogeo.ini
Attempting load of neogeo.ini
Attempting load of mslug.ini
Video: Monitor 65539 = "\\.\DISPLAY1"
Video: Monitor 65537 = "\\.\DISPLAY4" (primary)
Direct3D: Using Direct3D 9
Physical width 1265, height 976
Direct3D: Initialize
Direct3D: Configuring adapter #1 = Intel(R) UHD Graphics 630
DirectSound: Primary buffer: 48000 Hz, 16 bits, 2 channels
Input: Adding keyboard #1: HID Keyboard Device (device id: \\?\HID#WmVirtualDevice#2&37214c1c&0&0000#{884b96c3-56ef-11d1-bc8c-00a0c91405dd})
Input: Adding keyboard #2: HID Keyboard Device (device id: \\?\HID#VID_046D&PID_C232#2&5480ef7&0&0000#{884b96c3-56ef-11d1-bc8c-00a0c91405dd})
Input: Adding keyboard #3: HID Keyboard Device (device id: \\?\HID#VID_2516&PID_012F&MI_02&Col03#7&372746dc&0&0002#{884b96c3-56ef-11d1-bc8c-00a0c91405dd})
Input: Adding keyboard #4: HID Keyboard Device (device id: \\?\HID#VID_046D&PID_C534&MI_00#7&5018ca2&0&0000#{884b96c3-56ef-11d1-bc8c-00a0c91405dd})
Input: Adding mouse #1: HID-compliant mouse (device id: \\?\HID#VID_2516&PID_012F&MI_00#7&9f4a992&0&0000#{378de44c-56ef-11d1-bc8c-00a0c91405dd})
Input: Adding mouse #2: HID-compliant mouse (device id: \\?\HID#VID_046D&PID_C534&MI_01&Col01#7&1831a8e0&0&0000#{378de44c-56ef-11d1-bc8c-00a0c91405dd})
Input: Adding mouse #3: HID-compliant mouse (device id: \\?\HID#WmVirtualDevice#2&24679b77&0&0000#{378de44c-56ef-11d1-bc8c-00a0c91405dd})
Input: Adding lightgun #1: HID-compliant mouse (device id: \\?\HID#VID_2516&PID_012F&MI_00#7&9f4a992&0&0000#{378de44c-56ef-11d1-bc8c-00a0c91405dd})
Input: Adding lightgun #2: HID-compliant mouse (device id: \\?\HID#VID_046D&PID_C534&MI_01&Col01#7&1831a8e0&0&0000#{378de44c-56ef-11d1-bc8c-00a0c91405dd})
Input: Adding lightgun #3: HID-compliant mouse (device id: \\?\HID#WmVirtualDevice#2&24679b77&0&0000#{378de44c-56ef-11d1-bc8c-00a0c91405dd})
unzip: opened archive file roms\mslug.zip
unzip: found roms\mslug.zip ECD at 980
unzip: roms\mslug.zip has no ZIP64 ECD locator
unzip: read roms\mslug.zip central directory
unzip: closing archive file roms\mslug.zip and sending to cache
unzip: found roms\mslug.zip in cache
unzip: opened archive file roms\mslug.zip
unzip: closing archive file roms\mslug.zip and sending to cache
unzip: found roms\mslug.zip in cache
unzip: closing archive file roms\mslug.zip and sending to cache
unzip: opened archive file roms\neogeo.zip
unzip: found roms\neogeo.zip ECD at 980
unzip: roms\neogeo.zip has no ZIP64 ECD locator
unzip: read roms\neogeo.zip central directory
unzip: closing archive file roms\neogeo.zip and sending to cache
unzip: found roms\mslug.zip in cache
unzip: closing archive file roms\mslug.zip and sending to cache
unzip: found roms\neogeo.zip in cache
unzip: opened archive file roms\neogeo.zip
unzip: closing archive file roms\neogeo.zip and sending to cache
unzip: found roms\mslug.zip in cache
unzip: closing archive file roms\mslug.zip and sending to cache
unzip: found roms\neogeo.zip in cache
unzip: opened archive file roms\neogeo.zip
unzip: closing archive file roms\neogeo.zip and sending to cache
unzip: found roms\mslug.zip in cache
unzip: closing archive file roms\mslug.zip and sending to cache
unzip: found roms\neogeo.zip in cache
unzip: opened archive file roms\neogeo.zip
unzip: closing archive file roms\neogeo.zip and sending to cache
unzip: found roms\mslug.zip in cache
unzip: opened archive file roms\mslug.zip
unzip: closing archive file roms\mslug.zip and sending to cache
unzip: found roms\mslug.zip in cache
unzip: opened archive file roms\mslug.zip
unzip: closing archive file roms\mslug.zip and sending to cache
unzip: found roms\mslug.zip in cache
unzip: opened archive file roms\mslug.zip
unzip: closing archive file roms\mslug.zip and sending to cache
unzip: found roms\mslug.zip in cache
unzip: opened archive file roms\mslug.zip
unzip: closing archive file roms\mslug.zip and sending to cache
unzip: found roms\mslug.zip in cache
unzip: opened archive file roms\mslug.zip
unzip: closing archive file roms\mslug.zip and sending to cache
unzip: found roms\mslug.zip in cache
unzip: opened archive file roms\mslug.zip
unzip: closing archive file roms\mslug.zip and sending to cache
unzip: found roms\mslug.zip in cache
unzip: opened archive file roms\mslug.zip
unzip: closing archive file roms\mslug.zip and sending to cache
Optional device ':cslot6' not found
Optional device ':cslot5' not found
Optional device ':cslot4' not found
Optional device ':cslot3' not found
Optional device ':cslot2' not found
Optional memory region ':audiocpu' not found
Optional memory region ':fixed' not found
Optional memory region ':sprites' not found
Optional shared pointer ':maincpu' not found
Optional memory region ':maincpu' not found
Optional memory region ':screen' not found
Optional memory region ':ymsnd:adpcmb' not found
Optional memory region ':ymsnd:adpcma' not found
Optional memory region ':saveram' not found
Optional memory region ':cslot1:ymsnd:adpcmb' not found
Optional memory region ':cslot1:audiocrypt' not found
Starting Metal Slug - Super Vehicle-001 ':'
(missing dependencies; rescheduling)
Starting Motorola MC68000 ':maincpu'
Starting Zilog Z80 ':audiocpu'
Starting 74HC259 Addressable Latch ':systemlatch'
Starting Video Screen ':screen'
Starting palette ':palette'
Starting Neo-Geo Sprites (optimized) ':spritegen'
Starting Input Merger (all high) ':audionmi'
Starting Generic 8-bit latch ':soundlatch'
Starting Generic 8-bit latch ':soundlatch2'
Starting YM2610 OPNB ':ymsnd'
Starting Watchdog Timer ':watchdog'
Starting uPD4990A RTC ':upd4990a'
Starting NVRAM ':saveram'
Starting Speaker ':lspeaker'
Starting Speaker ':rspeaker'
Starting NeoGeo Memory Card ':memcard'
Starting SNK Neo Geo Edge Connector (Controller) ':edge'
Starting SNK Neo Geo Arcade Joystick ':edge:joy'
Starting SNK Neo Geo controller port ':ctrl1'
Starting SNK Neo Geo controller port ':ctrl2'
Starting Neo Geo Cartridge Slot ':cslot1'
Starting Neo Geo Standard Carts ':cslot1:rom'
Starting Metal Slug - Super Vehicle-001 ':'
Attempting to parse: default.cfg
Attempting to parse: mslug.cfg
Direct3D: YUV format = UYVY
Direct3D: Max texture size = 8192x8192
Direct3D: Device created at 1249x937
Direct3D: Initialize HLSL
Direct3D: First store options
Direct3D: HLSL initialized
Starting Metal Slug - Super Vehicle-001
Average speed: 100.00% (16 seconds)