Maybe you need to abandon using other apps to set affinity in WoW and just set it inside ot WoW.

You may also want to consider running WoW on only the physical cores of an i7.

You have a quad-core Intel i7 with Hyperthreading enabled, and only want WoW to run on the Physical cores... 1 + 4 + 16 + 64
/console processAffinityMask 85