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RickTheSnake: hey guys, i wonder if this issue is common. i experience heavy, HEAVY slowdowns on all the metal slug games particularly when there's a lot of sprites and gunshots around the screen. keeping a high resolution seems to exacerbate the problem further but even at stupid low ones it's still there and a huge problem for the playability of the game at least for me. hard to time jumps when the controls and response of the game slows down to a crawl. i've tried everything, from enabling the compatibility options in the exe to fiddling with every video control with no perceivable difference. launching with the options enabled somewhat reduces the issue but it's still there and a huge PITA. this happens both on my gaming rig and on my puny laptop, so i'm not sure it's a problem related to specific hardware (although it may be related to windows 10).

my specs on the gaming rig:

i7 6700K
GTX970
16gb RAM

laptop:

i5 4something U @2,5Ghz
intel gt550 integrated with hi-speed 8gb@1600mhz DDR3 ram slotted in by me

it's safe to say that it's a software problem 100%, since even the shitty laptop can play 3D games up to 2009 at reasonable settings and 60fps at native resolution.
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novous: As a professional programmer with gamedev experience I can tell the devs this with certainty:

"You did bad, and you should feel bad."

There's zero excuse for it to hit deadlocks or other blocks that I'm experiencing in Metal Slug 1, 2, 3, and X. What the hell did I pay for?

There is zero excuse for this. Stop defending it. Programming is not magic.

So here I am, trying it in MAME, and they're using such an ancient version of the NEOGEO BIOS, MAME won't even run it. GREAT JOB GUYS. Did you spend a whole week on this release?
I guess you never played these games on the arcades when they were new...

When these machines where brand new, the rage of the moment they did have slooow downs. Those slow downs are present both in the MVS and AES boards and you will find them in the same spot you do in these release.
The only way to remove those slow down is in MAME overclocking the cpu to 200%

About bios, you are so wrong... MAME runs all the bios from NEOGEO. The bios and rom you get with this release are just not compatible, not even in the same format..

Some releases of arcade games sometimes come with the roms in a format that mame can work with. For example Mortal Kombat Kollection. This is not the case....