H.264 for Blu-Ray Encoding Time

Hi All,
I have exported a Pro-Res 1080p 2 hour film from FCPX and just dropped it into compressor. I have then dragged the default H.264 for Blu-Ray settings on my video and it looks like it will take way over three hours. I have a friend running Media Encoder and with the same file on his laptop it does it in 40min and it's a slower spec . I am running Compressor 4.1.3 and the latest MAC OS operating system. I have enabled additional instanced checked and the number 1 in the drop down (there are no other numbers)
Is there anything I am doing wrong, surely it can't be this slow, it's not even set to multipass.
Thanks

Sounds about right to me for a rMBP.
Russ

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Since no response I've been searching and found the following.
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H.264 for Blu-Ray Encoding Time

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