I am able to reproduce this in Nightly using Windows 11 22H2 with a fresh profile. Here is a performance profile https://profiler.firefox.com/from-browser/calltree/?globalTrackOrder=9a0w8&hiddenGlobalTracks=1w5&hiddenLocalTracksByPid=1488-0235wxuy0wy7~7532-0w9~12848-0wp~1820-0wp~7244-0wx2~6892-0wp~8820-1w68wu~5492-0wv~2712-0wx1&thread=0&v=7
Bug 1791626 Comment 5 Edit History
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I am able to reproduce this in Nightly using Windows 11 22H2 with a fresh profile. Here is a performance profile https://share.firefox.dev/3FjciPc Edit: Updated profile link