Usually when I come across one, I end up having to refactor something anyway - whatever was janky enough to make me want to test it is usually janky enough to break apart into more easily testable pieces when it slows down or does something weird.
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Seems like a variant of the Heisenbug.
Usually when I come across one, I end up having to refactor something anyway - whatever was janky enough to make me want to test it is usually janky enough to break apart into more easily testable pieces when it slows down or does something weird.