The DAT file released on August 8 2014 is slowing down my system. With McAfee services turned off, system is working fine. But turning the services on is again slowing down the system.
How to resolve this issue ?
I am still using 5400 engine (obsolete) and is running on Windows XP.
Try to run McAfee profiler and see which process and directories touched by McShield process so later you can add into OAS exclusion and see results.