conf MAC PRO late 2013 12 core 64 GBram 1Tb ssd Dual Radeon D700, thunderbolt chassis sonnet with PCIe SSD and BlackMAgic Decklink QUAD (4 input)

Issue: 3 and 4 port enabled an visible in cat soft but when try to use them cat start hanging, text fields become grey color or crash to os x. Driver last from black magic site, mac os 10.10.1 Yosemite
Same things happen at cat 5