cpu usage when excel is in taskbar
 

hello all !! i have my big set of 200 open workboooks ...
they all run a macro of analysis evry 2 seconds..

the question is that..
when the excel window is active window..
the cpu usage is 30 %

....when the active window is another one or..
when i send the excel window to the taskbar,
the cpu usage rises to 45 %...

do you think there is a way to avoid that problem ?? tx !!