It's quite obvious by now - that the DX12 version is poorly optimized. And supposedly, needs a lot of work to be properly optimized (correction: it needs a lot of work - cause it's quite hard to be optimized for "general hardware - aka - PCs" - compared to "specific hardware - aka - VG Consoles"). They already released 2 x Hot-fixes to address some issues - even so, if we're to be real about its current stage - it's more accurate to call it W3 Next-Gen "Beta Release". So yeah, might take awhile till the game is patched to such level that's worth deeming as a "Stable Release". Nothing new imo, quite the opposite - "same old, same old..." That being said, it helps be more realistic in terms of expectations.
On the other hand... even while taking into account this beta release - the nitpicking of its benchmark fan-base is also unrealistic. And i get it - they paid a lot of money for High-End+ hardware - and thus - they expect every game to give them a FPS ego stroke, yet... W3 Next-Gen which is suppose to offer some of the best visual samples (which in theory - is meant to shine on cutting edge hardware) - is more ore less glitchy - and that's impacting the highest possible settings (the visuals are there but the FPS is kinda embarrassing - for the hardware in question - especially while using a high end GPU from previous generation). To be fair, when it comes to DX12 software and cutting edge hardware (not necessarily - tho obviously - that's where we'll see the most troublesome issues) - the improvements & fixes are also tied to proper drivers (aka, GPU driver devs working with W3 NG devs - to optimize a future driver release).
Last but not least and also quite ironic (all things consider) - maybe even a good news for some people: the state of the game is far from bad - even while pairing an ancient GPU (well, not in the true sense of the word - but for the tech world a product released 10 years ago IS sometimes regarded as "ancient") with a modern CPU (i5 12th Gen). As in, even an old GPU like GTX 760 - which used to be appropriate for the classic version of W3 (nVidia GTX 770 / AMD R9 290 used to be the Recommended GPU - while nVidia GTX 660 / AMD HD 7870 was the Minimum recommendation) - is still capable enough (or more like - good enough - if that's the only option available) - to experience some
of the Next-Gen visual improvements. Maybe not the most ideal experience - but with some tweaks here and there it's definitely playable - for someone who cares more about the game...