topic Re: Slow Loading Issue on Some Websites in Firefox in Discussions

Slow Loading Issue on Some Websites in Firefox

Peter12 — Sat, 18 Apr 2026 11:17:18 GMT

Hello everyone,

I am facing an occasional issue in Firefox while browsing certain websites. Sometimes pages load slowly or do not open properly, especially when multiple tabs are active.

For example, I noticed this while accessing https://cmacourse.ae/, where the page does not always load smoothly.

The issue is not consistent, but it appears from time to time during regular usage.

I am sharing this observation to check if it could be related to browser performance or compatibility.

Thank you.

Re: Slow Loading Issue on Some Websites in Firefox

lihrmdubai — Sat, 11 Jul 2026 10:30:02 GMT

HI ,

I've experienced something similar on a few websites lately. Some pages load normally, while others take much longer than expected even with a stable connection. Clearing the cache helped a little, but it wasn't a complete fix.

One site I visit regularly for HR course materials, https://lihrmedu.com, has been loading fine for me in Firefox, so the issue doesn't seem to affect every website. Hopefully Mozilla can identify what's causing it.

Re: Slow Loading Issue on Some Websites in Firefox

sarahmaryam — Wed, 22 Jul 2026 07:56:47 GMT

Intermittent slow loading in Firefox is often related to browser settings, extensions, cached data, network conditions, or system resource usage rather than a permanent browser issue. Here are a few steps that usually help:

Update Firefox to the latest version.
Clear the browser cache and perform a hard refresh (Ctrl + Shift + R).
Open the website in a Private Window (Ctrl + Shift + P) to check whether an extension is causing the delay.
Temporarily disable extensions such as ad blockers, VPNs, or security add-ons and test again.
If you have many tabs open, try closing some of them and restart Firefox, as high memory usage can affect page loading.
If the issue continues, launch Firefox in Troubleshoot Mode (Help → Troubleshoot Mode) to determine whether the problem is caused by custom settings or installed add-ons.

If the problem only occurs on certain websites, it may also be worth comparing the loading performance with other websites to see whether the behavior is consistent. For example, you can try opening cma course and check whether it loads smoothly under the same browsing conditions. This comparison can help determine whether the issue is related to Firefox, your browser environment, or the specific website you're visiting.

If you can also share your Firefox version, operating system, and whether this happens only when multiple tabs are open, the community will be able to provide more specific guidance.

Re: Slow Loading Issue on Some Websites in Firefox

sarahmaryam — Wed, 22 Jul 2026 08:02:23 GMT

Hi,

Update Firefox to the latest version.
Clear the browser cache and perform a hard refresh (Ctrl + Shift + R).
Open the website in a Private Window (Ctrl + Shift + P) to check whether an extension is causing the delay.
Temporarily disable extensions such as ad blockers, VPNs, or security add-ons and test again.
If you have many tabs open, try closing some of them and restart Firefox, as high memory usage can affect page loading.
If the issue continues, launch Firefox in Troubleshoot Mode (Help → Troubleshoot Mode) to determine whether the problem is caused by custom settings or installed add-ons.

If the problem only occurs on certain websites, it may also be worth comparing the loading performance with other websites to see whether the behavior is consistent. For example, you can try opening CMA course and check whether it loads smoothly under the same browsing conditions. This comparison can help determine whether the issue is related to Firefox, your browser environment, or the specific website you're visiting.

If you can also share your Firefox version, operating system, and whether this happens only when multiple tabs are open, the community will be able to provide more specific guidance.