Question: Everytime I set the busratio to 32 (10.6.7 & 10.6.6), the graphics card slows down and lags, although mouse movement is perfect. Is this possibly the power supply? I'm currently running it on an Antec Earthwatts 380. I know it's a bit low, the friend I'm making this for bought the wrong one... :x
My setup and tests below:
Currently running 10.6.7 mbp2011 install with march 6 vanilla kernel on GA-P67A-UD3, i5 2500k, Gigabyte ATI 5850. Can only boot with busratio set to 32 or lower (BIOS).
Before, on 10.6.6, using legacy_kernel, busratio 33 (default), mbp2011 ati kexts from multibeast, I had no graphics issues (b/c busratio was at default), but the mouse was slightly off. When I raised the busratio above default, graphics was on a FAST FORWARD speed. Even in WoW, I was able to run and fly faster than anyone else, almost double their speed (I tested this with a friend, seems like a hardware hack ).
Also, I tried a GTX460 (which I've returned b/c of freezes) and I was experiencing the same graphics lag when busratio was not at default. So this makes me think that it's not the graphics card/kexts... tried with both DSDT and w/o.
Currently have FakeSMC, NullCPU..., USB 3.0, Lnx2Mac from Multibeast. ALC892Enabler. Chameleon 747.