Panorama uses high CPU and memory in Firefox
Panorama grouping drives Firefox CPU or memory use very high, even with few tabs, until the add-on is disabled.
Tier I · Proven The best-established problems.
5 public reports · first reported 19 August 2020 · last reported 13 May 2026
What's going wrong
Several users report that this Firefox tab-grouping add-on pushes CPU use to very high levels, sometimes staying at a constant high load after a restore.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 5 reports are about, and how many came each month.
- Related problems.
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