Hello, I seem to have exactly the same problem. The funny thing is it was not so noticeable before and seems to be getting worse with time. I wonder if WDFME has been negatively impacted by Windows updates and WD has not been able to keep up.
There were performance problems with this software in previous versions that were eventually resolved.
I agree that customers should expect the software bundled with the drive to work acceptably. I am not impressed with WDs track record.
I am using Windows 7 64 bit Family edition (Premium) Service Pack 1