NİS 2011 DİSABLİNG AUTO 'OPTİMİZE' İN THE PERFORMANCE SECTİON

Hi all, certainly hope you can help me by telling me,how i can turn of the auto function of 'optimize' in the Performance section of my NİS 2011.  İ find that my NİS 2011 optimizes  often,and would like instruction ,on how i can turn it off.

 

Would prefer to use the function manually.

 

Thanks in advance for any help.