Hello all! Wasn't entire sure if I should post this under MBA or El Capitan. Anyway, since installing El Capitan on my 2012 MBA (DP1), I've noticed that rarely I will have graphical glitches on my computer that requires a restart to get rid of. This has occurred three times over the last 2 months. When the glitch occurs, the edges of my screen get fuzzy and start flashing. Similar to the issue that the MBP's had a recall for a couple years back. I have done a couple GPU stress tests to see if that will cause the issue, but it doesn't. I have also ran the Apple Hardware Test, and that comes back clean. Could it be just a software glitch that is causing the GPU to glitch, or does it sound more like hardware failure of the GPU? Any input would be great.