I played Witcher 3 on release with my amd 290x and it ran fine at 1080p, dunno why some people have to complain about everything
I assume his post is referring to Hairworks in Withcer 3. If you played it on a 290X then you would have had to turn hairworks off. I had a 980 at the time and hairworks was unusable until it was patched. The main thing for Nvidia was that it tanked AMD GPUs even harder. A GTX 980 and 290X had very similar performance in Witcher 3 until you turned on hairworks. Thankfully most review sites tested with Hairworks off to remain objective.
https://www.techspot.com/review/1006-the-witcher-3-benchmarks/page6.html
https://www.eurogamer.net/articles/...dia-hairworks-really-sabotage-amd-performance