Part of the problem has been that the bugs are what we like to call "Heisenbugs" that don't occur in a neatly deterministic manner that is easily debugged.
However, thanks to some Gentoo developers it's gotten a whole lot easier to trigger the crashes in an automated manner: https://phoronix.com/scan.php?page=news ... Stress-Run
That article uses a non-overclocked 1800X as a test subject. Oh, and you can crash the non-overclocked chip even with low-clocked DDR4-2133 RAM and with SMT turned off:
We'll see now if AMD will provide public comments or if they investigate further as they now have another reproducible test case to slam the Ryzen chips hard in just a few minutes even with SMT disabled and running at DDR4-2133.
While something tells me that the video-blogs that got personally engraved ThreadRipper CPUs for review aren't going to have the technical competence levels to install and run this software, I'm 99% sure that the Threadripper will be just as crashy (if not moreso) than a single-die RyZen part. This should also give some people pause when thinking about the even more complex Epyc platform. It's easy to show off some canned benchmark scores, but people don't drop money on servers to run canned benchmarks.