Just updated to 10.11.5 and wanted to report that 346.03.10f01 driver does not fix the issue with Color Finale plugin.
I too have problem with Color Finale. It just crashes FCP X. I did a couple of experiment.
MSI r9 280x Gaming: Color Finale does not crash FCP X but same sluggish performance after a while in FCP X. Sold this card months ago and jump to 980 Ti.
MSI GTX 980 Ti Gaming: Color Finale crashes FCP X and not very stable, however, scrubbing response is fantastic.
EVGA GTX 570 HD, macvidcard flashed: Color Finale does not crash FCP X, scrubbing and playback not as good as 980 Ti. Slow when dealing with 4K video keying onto a static picture with a few graphic logo on top.
Gigabyte r9 280x Windforce: Color Finale does not crash FCP X. However, after using a while, I was not able to boot up anymore into Hackintosh. Tried many settings...card might be toasted...just purchased it less then few hours ago...sob...need to send RMA.
I am back to GTX 570 HD, it works but after using FCP X for sometimes, need to quit and refresh FCP X. If not the scrubbing etc slow down in response.
Possible conclusion: It's an OpenCL problem between Color Finale and FCP X. I might get my 980 Ti flashed and try...this is costing a lot of money...
Hope someone has tried FLASHED Nvida card and report back here.
System info:
Nvidia card using web driver: 346.02.03f01
Smbios: imac (Late 2013)
OS X 10.10.5 (14F27)
FCP X 10.2.3
Color Finale 1.0.23 (107)
Cheers.
UPDATE:
2016 Jun 11: I just got back the MSI GTX 980 Ti Flashed by Macvidcard and quickly replace it from my GTX 570 HD.
I am glad to report that I had no crashes yet pushing 2 clips with Color Finale. Seems to solve the problem of Color Finale crashing FCP X!!! Now I got smooth and responsive timeline and use of Color Finale.