Want even more of a boost? Use the newest trunck revisions of LAVfilters (if you're not already).
For two smaller CPU utilization reductions (more noticable on weaker hardware), if you're not using madVR, you can use "D3D Fullscreen" . Also if you're using MPC-BE, then select the "MPC Audio Renderer"; if you're using MPC-HC, then you can download the MPC-BE standalone filters and add it to MPC-HC's "External Filters" list manually (make sure you set it to "Prefer!".)
In total, if you were using a stock copy of the MPC-HC that came with SVP, you could see a 10-20% CPU utilization decrease by doing all three things.