I have a GTX 1070 in my cMP running macOS Sierra, however I have concerns about the quality of NVIDIA's web driver. I also get frustrated having to wait for NVIDIA to release a new driver each time there is an OS update. I know you can hack the driver to force an older version but this is too much effort for my liking. Finally, I also have concerns about the longevity, and quality, of NVIDIA updates. I have about a week left to return the 1070 and I'm considering an RX 580 to replace it. The RX 580 will be natively supported in 10.12.6 and in High Sierra and I think system stability and ease of use (native driver) are probably preferable to the somewhat higher performance of the 1070. This is the card I have in mind: SAPPHIRE Pulse Radeon RX 580 8G GDDR5 Dual HDMI/DVI-D/Dual DP Graphics Card - Black Will I be better off moving to an RX 580? I'd be interested in hearing your thoughts before I return the card. Thanks.