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Last active January 13, 2022 09:27
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Firefox stuck at 100% CPU no internet - fix (13.01.2022)

Looks like some "time bomb" in Firefox

To workaround:

  1. Open about:config
  2. Search for https3
  3. Disable network.http.http3.enabled
  4. Restart Firefox

Now re-enable network.http.http3.enabled and restart. It should be still working.

Source: https://news.ycombinator.com/item?id=29918121

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