After having both graphics boards and a cable replaced, my case was sent to Apple engineers. They claim to have discovered that it's a software issue, not hardware, and to "keep the computer updated, a fix should be coming". Basically, a cop-out, so they don't have to replace the computer. Note that no fix is promised, only that "they're working on it". It's basically a delaying tactic until the new Mac Pros come out, and until applecare runs out, so they won't have to deal with the problem. Long before I bought an Apple product (which I had to for work), I recognized that this was their tactic, and that people buy it hook, line, and sinker every time. Even since the first few versions of OSX, I could see that it was every bit as unreliable as Windows, it's just that Apple didn't display any error messages, so it just *looks* like it's more reliable. I am so disappointed about this and I don't see myself buying the 2019 Mac Pro, as I had planned. No way. Not with this level of support and denial of responsibility for selling me a lemon.
