Depends what you have, some R9 280 were junk. Some had VRAM OC from factory too high (my 280X) to a point of random issues that you can hardly trace the source of unless you know and check VRAM below stock clocks. Even the cores kind of sucked at least on cards I've had, going above 1GHz was a stretch.
As far as drivers go, use old drivers made in the era of that GPU, newest drivers not matter what chip brand are often made with latest products in mind and they don't bother testing 2-6 generations back if everything is compatible, they would rather piss you off and force you to buy a newer product.
These issues you describe have nothing to do with AMD vs NV. Just today I found yet another issue with NV Turing... although that one is a combination of software and the card. Get something decent not a prehistoric 200 series, those were problematic, be it 280 or 290. 400+ for AMD, 1000+ for NV. Older than that the cards are likely end of life quite often, some people mined the crap out of them etc. you won't find many good ones.
ASUS 280X, 1070MHz stock, 6400MHz VRAM stock, not stable ==> RMA and refund. Going beyond 1070MHz... forget it really. Downclocking VRAM helped a little but it was a moody card overall. Tahiti is unsupported old GCN anyway now, doesn't have the necessary features. A 390 with 8GB would be kind of the oldest I would bother with if you don't want a 480/590.