Godfall's creators claim that the game would use up to 12 GB of the Radeon RX 6800 series cards' VRAM when using 4Kx4K textures at Ultra settings. This does concern owners of cards such as the RTX 3070 and RTX 3080 casting doubts on how well these cards age over time for 4K gaming.
https://www.notebookcheck.net/Godfall-makes-good-use-of-Radeon-RX-6000-s-memory-requires-12-GB-VRAM-at-4K-Ultra-but-it-is-not-all-gloom-for-RTX-3080-owners-yet.501773.0.html