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x64 build of latest git much slower than Win32 one


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I have compiled the latest git of project64, angrylion-rdp-plus and rsp-cxd4, each in both 32- and 64-bit varieties. It appears that pj64 is much slower when compiled as native 64 bit app: with the said plugins I am getting approx. 55 FPS in super mario 64 press start screen with 64-bit build vs 85 FPS with 32-bit build. Is this something to be expected? Thank you!

ETA: looking at the source it seems that the dynarec is only available for arm and x86, this would explain the slowness. Is this the case?
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