Blocker drives up CPU and memory use in Firefox
The add-on slows Firefox down, drives CPU or RAM up, and keeps the processor busy even when no video plays.
Tier I · Proven The best-established problems.
6 public reports · first reported 24 April 2018 · last reported 30 January 2026
What's going wrong
Firefox users report that the add-on makes the whole browser sluggish, with some seeing CPU use near full and memory that keeps growing.
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 6 reports are about, and how many came each month.
- Related problems.
No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.