Why is downloading extremely slow at the end of each shard?

[tongyx361]

export HF_HUB_ENABLE_HF_TRANSFER=1
huggingface-cli download Qwen/QwQ-32B-Preview

model-00007-of-00017.safetensors:  23%|█████████████████                                                        | 912M/3.90G [00:23<00:45, 65.8MB/s]
model-00007-of-00017.safetensors:  99%|████████████████████████████████████████████████████████████████████████▌| 3.88G/3.90G [05:45<01:32, 228kB/s

This only happens in some clusters.

Could anyone help me figure out the possible cause?

[muchanem]

I experience this too! Unsure why