consider raising the tolerable latency

The tolerable latency seems a bit low, I have around 100-200ms latency and don't notice any problems after changing the code to bypass the flog.Fatal

Start by locating the tolerable-latency check and the flog.Fatal path referenced in the issue. Clarify the desired threshold and verify that connections with roughly 100–200 ms latency no longer trigger the fatal path, adding or updating tests if the relevant test entry point is found.

索引モデルが issue の本文から書いたものです。