ComfyUI-AnimaDynamicCFG

Custom ComfyUI nodes for dynamic CFG control and realism enhancement. Originally designed for Anima realism finetunes, but works with any diffusion model.

Problem

Static CFG forces a compromise: low values produce realistic textures but structural artifacts, while high values improve coherence but amplify the base model's stylistic bias (e.g. anime look). These nodes let you have both.

Nodes

CFG Control (Anima/sampling)

Anima CFG Schedule — Interpolates CFG from cfg_start to cfg_end across denoising steps using a chosen curve (linear, cosine, sine, ease_in, ease_out, ease_in_out). Use higher CFG at the start for structure, lower at the end for realism.

Anima Adaptive CFG — Monitors the norm of cond - uncond divergence at each step. When the model pushes too hard in one direction, CFG is automatically reduced. When divergence is low, CFG increases to maintain structure.

Anima CFG Rescale — Post-CFG std normalization. Rescales the CFG output so its standard deviation matches the conditional prediction's std, preventing over-saturation at higher CFG values. Based on arXiv:2305.08891.

Anima CFG Schedule (Advanced) — All-in-one node combining scheduled CFG curve + adaptive divergence damping + post-CFG rescaling.

Realism Enhancement (Anima/realism)

Anima Frequency Boost — Post-CFG FFT filter that selectively boosts high-frequency components (skin textures, hair detail, fabric weave) while preserving low-frequency structure. Strength ramps up in later steps where fine details form.

Anima Latent Mean Correction — Subtracts per-channel spatial mean from the denoised prediction. CFG causes latent mean drift away from zero, leading to over-saturated and unnatural colors. This correction restores natural color balance.

Anima Noise Sculpt — Injects controlled micro-noise during late denoising steps with a sinusoidal fade envelope. Creates the natural surface grain (skin pores, fabric texture) that models with anime priors tend to over-smooth.

Installation

Clone into your ComfyUI custom_nodes folder:

cd ComfyUI/custom_nodes
git clone https://github.com/DanrisiUA/ComfyUI-AnimaDynamicCFG.git

Restart ComfyUI. Nodes appear under Anima/sampling and Anima/realism.

No additional dependencies required — uses only torch and math.

Usage

All nodes are model patches. Connect them between your model loader and sampler:

Model Loader → Anima CFG Schedule (Advanced) → Anima Frequency Boost → KSampler

Multiple nodes can be chained. They use different hook points and don't conflict:

• CFG Schedule/Adaptive use sampler_cfg_function (replaces CFG formula)
• FrequencyBoost, MeanCorrection, NoiseSculpt, Rescale use post_cfg_function (post-processing chain)

Compatible with KSampler, SamplerCustomAdvanced, ClownsharkKSampler, SharkSampler, and other custom samplers that go through ComfyUI's standard sampling pipeline.

Recommended Settings

For anime-to-realism finetunes:

| Parameter | Value | |-----------|-------| | cfg_start | 5.5–7.0 | | cfg_end | 3.0–4.0 | | schedule | cosine | | rescale | 0.5–0.7 | | high_freq_scale | 1.2–1.4 | | mean correction strength | 0.3–0.5 | | noise sculpt strength | 0.01–0.03 |

License

MIT