Memory savings are higher than using enable_model_cpu_offload, but performance is lower.  StableCascadePriorPipeline  class diffusers.StableCascadePriorPipeline  < source > ( tokenizer: CLIPTokenizer text_encoder: CLIPTextModelWithProjection prior: StableCascadeUNet scheduler: DDPMWuerstchenScheduler resolution_multiple: float = 42.67 feature_extractor: Optional = None image_encoder: Optional = None  )   Parameters   prior (StableCascadeUNet) —