OS X 10.11.4 Update - FLAWLESS VICTORY!
Ran update through App Store, I changed nothing in Clover just treated it as if I was sitting in front of any other Mac. System booted, Nvidia Driver update asked to install on boot and I let it install, system restarted as normal.
Agreed on the apple QA, it's sad to say but it seemed to start a downward trend shortly after a certain CEO passed away. Most of my work is light photoshop and illustrator so the 750ti seems to hold up just fine for my purposes, the only reason I used the 280x in the first place was it was...
Well I gave up, I found a deal on a 750ti and put it in...I had to use SwitchresX to get full resolution on my UltraWide LG display but this machine is now solid and sleep works perfectly! Same reason I stopped using the AMD card on my PC, driver support is just not there with AMD. Oh well...
Ya it's an odd one to be sure, and you and I have different 280x cards as well with what sounds like the same issue. Mine is an ASUS Direct CU II card and I'm starting to wonder if the factory overclock may have something to do with it, but I am just too damn lazy to put the card in my PC to...
I tried the framebuffer change it did nothing to solve the issue. It has definitely been better since 10.11.3 but it is still crops up every now and then, I'm going with the assumtion that it;s a driver memry leak as it gets worse over time and settles way down after a reboot.
Mine is still doing it too, it's definitely better than 10.11.2, but it is still there. Completely random as is yours, I used to be able to make it freeze in Illustrator easily but thankfully it has settled down a bit. I'm going to look at the framebuffer idea as well.
minor hiccup with it not restarting itself at the installing updates screen, hit the restart button and the install finished properly. Now to see if my GPU freezes improve at all.
Asus Radeon 280x
Single 280x on my system... It's really odd, I can make it freeze by simply moving objects in Illustrator a few times and BAM. The GUI freezes, if I command Tab or click out to the desktop it picks up running again. The console shows the "GPU appears to be hung..." umpteen times.