Why is Static Cache latency high?

In the above document, “Static Cache” is marked as having high latency. I’m finding this a bit counterintuitive. My understanding is that a Static Cache, by pre-allocating memory for the cache, should help avoid dynamic memory allocation during inference. This, in turn, should theoretically lead to a reduction in latency. Am I misunderstanding its implementation or the definition of “latency” in the document?

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