Recommend using resize with Denoising Strength 0.4 ~ 0.6 after generating smaller image.
Few safe images / Face shots / no prompts
To avoid Civit Censorship.
If you want png version of showcase images, consider visiting Tensor or image dumpster Discord on link below.
https://tensor.art/models/776461294896194603/Observer-a-Azur-Lane-Animation-observer