AMD doesn't care about the consumer market right now. Look at where they are selling Vega20. Navi is an afterthought.
If the failures can be definitively linked to the memory subsystem and can be found with both Hynix and Samsung VRAM, then the next logical place to look is the memory controller. That being said, with some of the cards going into "partial failure" mode where they can operate with limited GPU clocks, I have to wonder if the problem is the memory subsystem at all.
Either that, or we are seeing failures on multiple levels. That will make diagnosis all the more difficult.
What? How is it an afterthought? They allegedly overruled the former head of the graphics division to focus on Navi development at the behest of one of their largest partners.
What did some of you expect them to do? 12nm doesn't offer much real improvement over 14nm (some but nothing spectacular, it wouldn't change things), and they obviously have other products that they should be prioritizing on 7nm. Its not like they could've fast-tracked 7nm more, as Apple likely got the bulk of early 7nm production. They've been saying for years that Navi was designed for 7nm, so trying to port it to 12nm would've been stupid.
Plus there's simple costs, if you think they're going to lead production on a new process with a new design, on a chip that tends to not be high margin for them and doesn't offer the outright numbers of other markets, I don't know what to say.
The most baffling part is that you guys ignore that the issues Nvidia is having are a perfect example of why AMD is smart to have stayed course. Backporting Navi to 12nm would likely be a stupendous blunder, and an updated Vega would likely only have them competing better with the 1070 and 1080, and that's if Vega isn't fundamentally flawed in design for gaming, or they didn't botch it somehow. And even then they'd likely have made it look poor like they did with the 590. It'd already be using more power due to GDDR vs HBM (unless they really want to compete with RTX on price while offering likely worse performance in traditional rendering and also not having any of the features Nvidia is selling people on RTX for), so a 12nm Vega likely would be sucking down 300W just so they could go "look we compete with stock 1080Ti!, at 1/3 more power.
I get it, its a bummer that the graphics market is stagnating, but let's not get too absurd.
I'd be curious how the Quadro cards are doing. I think that's actually a much more important market (and Vega I believe is actually more competitive there than in consumer gaming). If Quadro is having issues too, that could spell trouble for Nvidia, as that might mean companies start looking at how much they're tied to Nvidia over CUDA.