I'm getting continual CPU usage of 13% for MPE 1.8.6. No change when I disconnect or exit. I will revert to 1.8.5 for the time being.
Update: Created a system restore point prior to reverting to 1.8.5. Had trouble with the install so I restored back to 1.8.6. Upon reboot, no more high CPU usage. Will keep an eye on it.
Win7 x64
Z77 chipset
Intel i7 CPU (3770H)
16gb RAM