Conditional formatting slowing down Excel

artsjeroen

New Member
Joined
Mar 18, 2014
Messages
5
I've created a rule in conditional formatting to format rows based on duplicate values using this formula:

=ISODD(SUMPRODUCT(1/COUNTIF($A$1:$A2,$A$1:$A2)))

Which works nice but excel freezes when scrolling through my sheet.
Is there another way which is 'lighter'? Or VBA perhaps?
 

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