Making affinity changes permanent (setting affinity in task manager only lasts until you exit the game): This affinity fix also fixes the same issue with AC2, ACB and AC3 when using VSync. Removing the first core of your cpu availability manually using the Task Manager affinity or alternatively using utility Process Lasso to automatically remove CPU 0 access from the ACB executable resolves this. When using VSync, excessive single core use is evident (typically 99%) with any Quad Core CPU and above.
