ELA causes high RAM usage on Domain Controller ( Win Server 2008 )

ELA causes high RAM usage on Domain Controller ( Win Server 2008 )

When I add My Domain Conrollers ( On Win server 2008 ) in ELA console for collecting Event Log from them, RAM Usage of Domain Controllers goes up and continue stays up forever . 
I have just this problem on Win Server 2008 DC, I didn't have such a problem on Win server 2003 DC !!

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