Hi Kristian,
I ran the Decklink disk speed test on our raid and the results were extremely poor. I then erased the raid and restripped it as Mac OS Journaled with 256k blocks, after running the disk speed test again it reads at 360 mbps and writes at 283 mbps. Input performance is noticeably improved, however capture still freezes randomly. I also noticed that if I run the speed test more than once on the newly striped raid the results can differ significantly. I have also used the Decklink capture tool with picture freezing and no timecode coming through as we are capturing our timecode via the RS-422 control.
Still Testing.
Cheers,
Robert