I was going to upgrade to High Sierra, after I download if the High Sierra installer, I only get 20mb instead of full installer (which is 5.2 GB).
Any windows I have open, such as Safari, are visible while the desktop/dock 'flicker.' Any suggestions on how to fix this? Unchecking the 'Automatically adjust brightness' hasn't fixed it, and neither has lowering screen resolution. 10.12.6), with a built-in retina display I've been having a weird issue where every few minutes, the desktop and dock will seem to visually reset, like it might if the computer had just restarted.
