I can't run Ace-Step 1.5 XL on Comfy!?

This r/StableDiffusion thread addresses user difficulties running ACE-Step 1.5 XL in ComfyUI — an AI music generation model that was released on April 2, 2026, featuring a 4B-parameter DiT decoder for higher audio quality, with three variants (xl-base, xl-sft, xl-turbo) requiring at least 12GB VRAM with offload, and 20GB recommended. Common setup issues likely stem from the need to use separate model loaders, as workflows built for the AIO (all-in-one) version have the checkpoint, CLIP, and VAE baked in and need to be edited to use separate loaders for the XL split models. Users are also advised to place diffusion models in ComfyUI/models/diffusion_models, or if using GGUFs, in ComfyUI/models/unet.

ace step 1.5 xl sft terrible results
ACE-Step 1.5 XL Base — BF16 version (converted from FP32)
Echo Chamber - AceStep 1.5 song (XL version)
Dataset source for AceStep team! XD
HELP: How do I show preview of the noise in Comfy so I will know if my video is wrong?
ComfyUI: Wan 2.2 Loras don't load/OOM after and update

Source: r/StableDiffusion | 2026-04-13