i was telling winlinmac, I come up with a crazy theory.
I was reading about mac memory specs. The importance of spd was stressed a lot in what I was reading.
As real macs don't use bios, but efi.
Is it possible that osx somewhere is reading the spd and using that and the bios is set differently?
I've set my memory to run with spd settings which is a bit of an arse for me as my memory is 2T memory. But so be it.
I've noticed in the past that if I open enough applications that although I might not get apps crashing and mouse jumping, I can tell that the mouse movement isn't quite as smooth.
With memory running at spd this doesn't seem to be the case, so testing will continue.
And thanks for testing my other idea snow.