Missing Textures

[Nerva]

(Bump)

Nobody else has this issue? If you do, speak up. Solutions are also welcome.

Same problem here. I have a pair of R9 290's but the second one is usually disabled.
I've noticed the following issues:
- Vanilla ships and stations have worse quality on some of their textures.
- Discovery ships and station modules (mostly in Gallia) tend to be mostly/partially white. For example, Massdriver's models are almost fully white. Sutinga looks normal. Valor is partially white.
- Prior to installing Swag Pack, planets had lower texture quality. After installing it some of them turned into uniformly colored spheres with no textures.
- Star spheres have much lower quality.
- Planetside textures are worse.
- Cayman has a fully white starsphere. Interestingly, Shadowhaven has almost no texture issues.
- Navmap has a blurry background.
- A load of input lag and no way to turn off V-Sync.

There were some threads about this problem and every time, the GPU used is R9 290(x).
R9 280(x) shouldn't be affected, as it's a renamed 7970.
R9 270(x) might be affected as it is of the same generation as 290.

Reinstalling or updating drivers didn't work.
Running as administrator or in compatibility mode didn't work.

If I move the display cable to the integrated GPU (again AMD) all issues are gone. So reinstalling the game won't help either.
This is going to work for me until I need to change the CPU. If I still want to play FL by then, I'll have to buy some cheap PC for that purpose.