Hi everyone, apologies if this is discussed in another thread... Recently bought a 'mac edition' Sapphire 7950 HD for my 2009/2012-upgraded 12-core cheese grater. Previously I had the stock GTX 120 and it was time for an upgrade... I've been seeing laggy performance with it, as bad if not worse than the GTX 120 was using my TV as a monitor. The lag's worst when plugin GUIs are open so there's some kind of conflict happening there... That said, performance in Logic is still sluggish when only displaying Logic's UI elements. I bought the card new from OWC, and I'm not using it for anything graphics-heavy like video editing. Just running Logic, Ableton Live, and various plugin effects and instruments on a 4K TV at 1080p, (60Hz...) I'll also lead off by saying I'm pretty clueless when it comes to graphics APIs. That said, it sure seems to me that with each new change macOS makes to graphics requirements I see a performance drop in most of my VST/AU plugins. Is there any accuracy to this? Machine specs: Machine: 2009/12 3.46 12-core, 64GB ram. SATA III internal SSD for OS, another SSD for instruments and samples, a SQUID with 3 ACHI m.2s for large orchestra instruments. OS: El Capitan. (Was thinking of upgrading to Sierra but a little hesitant now without knowing whether it could improve or degrade perfromance.) Monitor: Samsung KU7500 4K TV. (1080p not 4k) Just curious if others see lag with this card or generally find it to be a solid performer for non-video based work? As shown above, I'm running it at 1080p over HDMI, not 4k. Also any chance I'd see better performance coming out of miniDP?