It’s poorly optimized code, and the comments from the top brass has been “lol your PC sux” when they can’t even get it running right on their own hardware.

It’s not the variations of PC that’s the issue, it’s a design and quality control issue. Direct X and Vulkan are the bread and butter of PC gaming. Microsoft developed direct X to establish a common graphics framework for Windows and Microsoft game studio still fucked up working with it.