Poor Performance on standalone windows build

[mhughson]

I know its a bit of a long shot, as this hasn't been updated in years, but I am trying to get this compiling for Windows (which I have done), but it runs very poorly compared to the precompiled version in releases. I am trying to narrow down what is slowing things down in my version, and was just hoping that you might have some ideas to try.

When I enable DEBUG_HZ, I can see the emulator is running at a steady 47-48Hz. The CPU on the PC is only at about 13%.

I am compiling in Visual Studio (not GCC). I have tried a couple things:

• DO_INLINE_ATTRIBS=1
• Compiling in release
• Disabling rendering
• COL_GL_BSWAP

None have had any impact on performance.

I did a CPU profile, and nothing jumps out, but again my PC CPU seems to be running fine, so I think it is something internal to the program which is throttling things.

Any ideas on how to narrow things down would be much appretiated!