Here is one workflow: - ltx2.3-it2v-gguf.jsonuse gguf and split models.Reference output:RTX4070 16GB vRAM + 32G RAM i2v(10Eros_v1.4; 15*24*768*960): Prompt executed in 441.41 secondsRTX5080 laptop 16G vRAM + 64G RAM i2v(10Eros_v1.4; 15*24*768*960): Prompt executed in 338.79 secondsRequirements:Models:- 10Eros_v1.4-Q5_K_M.gguf (GGUF), Put in: ComfyUI\models\unet <a target="_blank" rel="ugc" href="https://huggingface.co/vantagewithai/LTX2.3-10Eros-1.4-GGUF/resolve/main/10Eros_v1.4-Q5_K_M.gguf">https://huggingface.co/vantagewithai/LTX2.3-10Eros-1.4-GGUF/resolve/main/10Eros_v1.4-Q5_K_M.gguf</a> - ltx-2.3-22b-distilled-lora-1.1_fro90_ceil72_condsafe.safetensors (distill lora) Put in: ComfyUI\models\lora\LTX <a target="_blank" rel="ugc" href="https://huggingface.co/SulphurAI/Sulphur-2-base/resolve/main/distill_loras/ltx-2.3-22b-distilled-lora-1.1_fro90_ceil72_condsafe.safetensors">https://huggingface.co/SulphurAI/Sulphur-2-base/resolve/main/distill_loras/ltx-2.3-22b-distilled-lora-1.1_fro90_ceil72_condsafe.safetensors</a>- ltx-2.3-spatial-upscaler-x2-1.1.safetensors (latent upscale) Put in: ComfyUI\models\latent_upscale_models <a target="_blank" rel="ugc" href="https://huggingface.co/Lightricks/LTX-2.3/resolve/main/ltx-2.3-spatial-upscaler-x2-1.1.safetensors">https://huggingface.co/Lightricks/LTX-2.3/resolve/main/ltx-2.3-spatial-upscaler-x2-1.1.safetensors</a> - gemma-3-12b-it-heretic-v2_fp8_e4m3fn.safetensors (CLIP) Put in: ComfyUI\models\text_encoders <a target="_blank" rel="ugc" href="https://huggingface.co/DreamFast/gemma-3-12b-it-heretic-v2/resolve/main/comfyui/gemma-3-12b-it-heretic-v2_fp8_e4m3fn.safetensors">https://huggingface.co/DreamFast/gemma-3-12b-it-heretic-v2/resolve/main/comfyui/gemma-3-12b-it-heretic-v2_fp8_e4m3fn.safetensors</a> - ltx-2.3_text_projection_bf16.safetensors (Split file.) <a target="_blank" rel="ugc" href="https://huggingface.co/Kijai/LTX2.3_comfy/resolve/main/text_encoders/ltx-2.3_text_projection_bf16.safetensors">https://huggingface.co/Kijai/LTX2.3_comfy/resolve/main/text_encoders/ltx-2.3_text_projection_bf16.safetensors</a> - Split VAE files (VAE) Put in: ComfyUI\models\vae\ltx - LTX23_video_vae_bf16.safetensors <a target="_blank" rel="ugc" href="https://huggingface.co/Kijai/LTX2.3_comfy/resolve/main/vae/LTX23_video_vae_bf16.safetensors">https://huggingface.co/Kijai/LTX2.3_comfy/resolve/main/vae/LTX23_video_vae_bf16.safetensors</a> - LTX23_audio_vae_bf16.safetensors <a target="_blank" rel="ugc" href="https://huggingface.co/Kijai/LTX2.3_comfy/resolve/main/vae/LTX23_audio_vae_bf16.safetensors">https://huggingface.co/Kijai/LTX2.3_comfy/resolve/main/vae/LTX23_audio_vae_bf16.safetensors</a> - taeltx2_3.safetensors <a target="_blank" rel="ugc" href="https://huggingface.co/Kijai/LTX2.3_comfy/resolve/main/vae/taeltx2_3.safetensors">https://huggingface.co/Kijai/LTX2.3_comfy/resolve/main/vae/taeltx2_3.safetensors</a>ComfyUI Nodes:- rgthree-comfy- ComfyUI-KJNodes- ComfyUI-VideoHelperSuite- ComfyUI-GGUF

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