I found that I can not enable the fix with crystalcpu with a bios without the fix, that's why I asked how the system behaves with a bios whom can enable/disable the fix.
To be correct it's Bit #2 in reg C10010123 and Bit #4 in C0010015 whom are set if the fix is applied. For now that means 2h/8h as you said.
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