It's all fine, played other indie games and more demanding ones and they are all good. I didn't update my video card since May but I dont think that can cause a issue...
Try deleting the d3d9.dll file.
If that doesn't work, I can try to make a Vulkan version and send it to you, but I'm not sure if that will fix it.
Well, that worked... Curious as to why, but glad to finally be able to play it normally haha, thank you. :)