The time is spent in session store code, and a large percentage of it is spent in `serializeCSP` and `serializePrincipal`. How many windows and tabs do you have open, roughly?
Bug 1776567 Comment 3 Edit History
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The time is spent in session store code, and a large percentage of it is spent in `serializeCSP` and `serializePrincipal`. https://share.firefox.dev/3HZn78G How many windows and tabs do you have open, roughly?