> It's just strange that I can run Blitz and Gauntlet Legends flawlessly but these 2d
> games run into issues.
MAME doesn't currently support those games on request from Cave. Fortunately I'm less official than I used to be...
2D and graphics quality do not correspond in any way to the available CPU power in the original arcade machine or how much PC will be necessary to emulate a given game. (Consider current "indie" games that look crude and pixelated but require modern PCs to run properly). In this specific case, we're talking about games with the same 64-bit CPU that powers the Dreamcast and Naomi, and unlike the case of Blitz or Gauntlet Legends, there is no DRC support to speed up the processor emulation. It happens that at lower skill levels the CPU is relatively lightly used and so it suffices to idle skip the games to bring them within reach of high-end MAME PCs.
However, at the points you see the slowdown, the game is using 100% of the CPU's power and so you are taking the full hit of 133 MHz 64-bit CPU emulation. At higher skill levels, this actually overloads the CPU on the real PCB and causes slowdown. So the only foolproof way to avoid slowdown in these games is the console ports.
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Re: Performance drops and cpu is not even close to being maxxed
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