When I use jit.gl.render for example just with the jit.gl.render.help patch and set the metro to 16.66 then the CPU load of max.exe rises up to 48% and stays there until I click on a patcher window or the Max window. After 10 to 15 seconds it starts to raise again.
If I set the metro to 17 the max.exe CPU load stays under 1%
As soon as I set the metro to 16 or lower the max.exe takes 48%
-Max 4.6, jitter 1.63 on XP pro
-overdrive is disabled
-performance options default
-no difference if qmetro or metro