I've been having consistent opencl_runtime errors with my Ref EVGA GTX 980. Usualyl they're triggered with the RED Plugin, and happen when rendering out any RED footage. It will work, sometimes, but it can be very unstable. If I try to apply FilmConvert to the RED footage, then it crashes within seconds. Usually in the Console it says that the issue was with 'GPU failing to send frame buffer command.'
I went as far as to Install El Capitan to see if the new drivers would fix my issue, but it's a no go. Same problems in 10.11.3 with the latest drivers. I'll keep this partition like this for testing, and to see if it improves next update, or not. I can't recommend the 980 for FCPX use, if you're going to be using RED raw footage. Have yet to find any relief, I even ended up buying a 500 GB SSD to see if my cache was the problem.
It's working OK working with ProRes not causing problems, and I can render the final in Resolve and not FCPX. I don't think I'll replace the 980 with an AMD card yet, I hate to give up the CUDA performance, and I might switch to Premiere, for easier collaboration, at some point as well. However, if/when the newest Mac Pro comes out, around the time the AMD Polaris GPUs come out, hopefully there'll be an AMD card to move on to (that will drive my 10-bit monitor!)
