Vermin Supreme 2020
you did not read wrong. it was most definitely a hype point made by MS many times during the vaporware days.Wasn't DX12 supposed bring Mgpu back unless I read it all wrong thought it was supposed to support duel+ GPUs better and make it so the Devs didn't have do the work to add it into games.
i read the same complaints from other folks on the low end of the hardware spectrum, which doesn't make sense. In the titles where vulkan exists, it runs better, on my 2080ti. though admittedly, I haven't hopped into many titles where its the secondary option. (IE: Like DX12 is the secondary option in BL3, and is thus more unstable. or at least was.)You blame the software for an unstable overclock?
DX12 uses more of the silicon so it makes sense you could get worse max overclocks using it, but that would be true with any new API. That is the point of the new APIs. I am all for Vulkan over DX12 but this simply cannot be a reason for that preference. Vulkan is also very likely to have a lower max OC with the same title compared to DX11 (unlikely anyone would actually do that), it can use more of the silicon too.
either way, in RDR2? Vulkan was much more stable. it also has decent MGPU support for that specific title.