We used to do 3D virtual world work, and though I like where you're going with this, I think loading hi-res tiles, for your use-case, is not the right approach.<p>The direction we were trying to move with <a href="https://ayvri.com" rel="nofollow">https://ayvri.com</a> back in 2018 was to model the world from low-res imagery, and render higher-resolution views. At the time, the AI tech wasn't ready, but I think you can do this now. You don't need a prefect replica of the world, you want a convincing replica, so when you're drawing Tokyo, the architecture and elements in the scene match what would be expected.