You might want to try and change your max transfer size and prefetch on the ATTO card. I have come to realize that the default setting is not the fastest and I agree that the support team at ATTO is great. They will work with you to set the card to get the fastest performance. ATTO is very strong in the M&E market specializing in Video editing, VOD and other media applications. READS are more important and done a lot more often than writes and it is my experience that the ATTO card is faster at these.