The issue may not be as bad (or exist at all) in FCPX because Apple may have been able to tune it in such a way to avoid overheating the GPU (just a theory). This is why it's been such a difficult issue to track. It's a very consistent progression that can be tracked through a batch of rendered files.įor those testing different combinations of applications, OS X, and drivers, you'll run yourself mad thinking you found a working combo if you happen to test it when it's sufficiently cool to avoid producing errors, only to have it show up again when the GPU is hotter. There's only one common factor: exports that were done with a low-temp gpu had no errors (green horizontal single-frame lines), and as the temp increased, the errors increased. We've experienced this issue from day 1 on our Mac Pro exporting multiple codecs (h.264, prores) from multiple cameras (RED, Blackmagic prores/cinema DNG), using different applications (Davinci, REDCINE-X, Premiere, Media Encoder). After going through this entire thread (skimming near the middle), I'd like to chime in that I'm reasonably certain this is a heat issue with the Firepro D700's.
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