This is a bug that affects all Kepler and Maxwell 1.0 cards, no matter the amount of VRAM. Even GPUs like the GTX Titan Black with 6GB VRAM are affected by this issue.
A couple of people contacted support, and they said that since those cards are very close to the minimum specification, they will be getting obsolete as the game continues to be tweaked over time. This means that your GTX 750 Ti and other cards from this generation are now considered incompatible and that we shouldn’t expect this issue to be fixed with a future patch. Only way is to upgrade to a newer GPU.
If this happened due to DirectX 12 or another major engine upgrade, it would be an acceptable compromise, but when it comes to a bug like the flashing clouds, I don’t think it’s right that our GPUs are considered obsolete just two months after release. There are a few threads on that issue where you can read others’ reports, and I would recommend submitting a Zendesk report in hope of getting them to change their stance on this.