this was the main problem that appeared between 10.3.3 and 10.3.9 - and unfortunately the apple api tp measure these frequencies on dual graphics cards was broken until 10.4.3 - so the problem was unmeasurable.Originally Posted by Spam Butterfly
for example the graphics card says its running at 60hz - it isnt exact - sometimes its 59.9 sometimes its 60.2 seems to depend on the screen resolution.
this caused a low level performance problem running at 60hz but less of an issue in europe at 75hz.
apple made an internal architecture change which affected me.