Summary
On Windows Server 2012 (R2) running Spider LCM you experience high CPU usage.
Symptoms
On Windows Server 2012 (R2) running Spider LCM you experience high CPU usage.
In the Windows event log you will find lots of the following entries:

Cause
This is caused by a new access logging feature of Microsoft Windows Server 2012 (R2):
http://technet.microsoft.com/en-us/library/hh849634.aspx
Resolution
If you deactivate the service "User Access Logging Service" the CPU usage will normalize.
Additional Information
Spider LCM