SeedVR2 TensorRT v1.6.0 cuts VRAM spikes by ~3GB with BF16 conversion for 6GB GPUs
Zestyclose_Bake3680 · reddit · 2026-10-04
ComfyUI-SeedVR2-VideoUpscaler-with-TensorRT v1.6.0 targets RTX 4050 6GB / RTX 5060 8GB users.
- By analyzing VRAM usage during DiT processing, the author found a stage where data momentarily expands to f32 size; converting it to BF16 reduced spikes by another 3GB.
- The new DisTorch2 DiT Loader node adds a Norm BF16 toggle, giving low-VRAM users more flexibility on batch size — at the cost of some image quality.
- DisTorch2 is a CPU offloading technique by John Pollock (ComfyUI-MultiGPU), enabling more aggressive offloading than the legacy loader with little speed difference.
- Open source with an explicit license.
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