Adjusting the Windows Performance Settings 
For better system performance and memory usage, you need to adjust the system settings as described below.
Choose .
In the System Properties screen, choose the Advanced tab.
For Performance, choose Settings....
In the Performance Options window, choose the Advanced tab.
For Processor scheduling: Adjust for best performance of, select Background services.
If required, change the Virtual memory (paging file size):
Choose Change and for Custom size set the Initial size and Maximum size to the relevant value.
For more information about the paging file size, see the installation guide for your SAP product.
Confirm your entries with OK.