This is just a hunch, but it sounds to me like heat issues on the Rocket. Rocket’s are finicky, if they get to hot, they send out garbage frames. You can usually see this in the RedCine-X Pro console.
I have had mine in my Mac Pro rendering and throwing garbage frames. I increased the PCI fan speed using SMCfanController, and tada, no more bad frames. I have seen this occur on many rockets.
Juan is probably on the right idea of throwing it in the tower rather than the cubic.
BTW the software debayer is of higher quality then the rocket debayer. Most RED Films end up using the software debayer in finishing.