Speed controller slows pages even without video
The speed controller slows Firefox and web pages down, even pages that contain no video, and Firefox warns that it is slowing the browser.
Tier I · Proven The best-established problems.
10 public reports · first reported 19 March 2021 · last reported 1 October 2026
What's going wrong
Users of the Video Speed Controller add-on in Firefox report that it makes the browser sluggish.
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 10 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.