If it is open source, i'm sure it won't be too hard to fork the old generator and add more models

Found my fix: Essentially when you import the character, this is automatically added to the "image generation prompt ending" in the character settings. (anime art of :1.2), masterpiece, 4k, best quality, anime art (negativePrompt:::(worst quality, low quality:1.3), , low-quality, deformed, text, poorly drawn, hilariously bad drawing, bad 3D render) (resolution:::512x768)

Removing the (resolution:::512x768) part fixed the issue.