Speed reports still flag render-blocking CSS and JS
PageSpeed and GTmetrix still flag render-blocking CSS, unused code and slow load after optimisation.
Tier II · Emerging Problems that are still building up.
4 public reports · first reported 5 March 2026 · last reported 22 April 2026
What's going wrong
Several site owners ran PageSpeed Insights or GTmetrix after enabling the optimisation plugin and found the optimised stylesheets and scripts still block rendering, with estimated delays of several hundred milliseconds.
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 4 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.