Invisible textures on Vulkan/DX12

There are some textures in my game that are not rendered when using Vulkan/DX12. I'm on a GTX 1080 ti with 11 gigabytes of VRAM, and my maximum shader cache size on disk is Unlimited.

The issue has persisted through a new installation of Path of Exile, a graphics driver update, rollback, and update again, and a hard clear of my NVIDIA OpenGL/Vulkan shader cache.

The invisible textures are widespread. Some particularly disruptive examples are:

- Tane model and Metamorph vat
- Crucible altar
- Expedition green highlight on chests and monsters in explosive radius
- Sirus final phase model

My dxdiag: https://pastebin.com/wCnmbRAP

Some images:

Maybe some clues as to what could be wrong:

- Rarely, like with my portal effect, exiting and reentering the area can actually fix the issue and the texture is rendered again.

- The textures are in fact rendered on DX11, but DX11 is so inefficient my game crashes frequently when using it.

- My spine bow texture isn't rendered but ONLY AFTER I APPLY A WEAPON EFFECT TO IT. Maybe it has something to do with effects on textures?

- Veritania tornadoes are all going the same direction, and not rendered in their true locations. I know this has been an issue before.