Firefox becomes very slow or stops responding when viewing shop drawings
I run a drafting site where we share shop drawings for contractors and architects: https://usadraftsman.com
Whenever I open these drawing preview pages in Firefox, the browser gets slow or sometimes becomes unresponsive. The same pages load completely fine in Chrome, so I’m trying to understand what might be causing this only in Firefox.
Most of the previews are large drawings or viewer embeds, so maybe Firefox is struggling with rendering them. I tried clearing cache and turning off extensions, but the issue still comes back.
If anyone has dealt with similar heavy graphics or rendering issues in Firefox, what should I check or adjust? Any suggestions would be appreciated.
Modified by William Smith
Chosen solution
What version of Firefox? What security software besides MS Defender are you running? Windows home or pro? If you're running Windows Pro version, I would test in Windows Sandbox to confirm. https://www.howtogeek.com/399290/how-to-use-windows-10s-new-sandbox-to-safely-test-apps/
The site doesn't allow me to access any samples. Hard to help with something we cannot see or replicate. Show your system specs by posting a screenshot of the performance tab in Task manager.
Here's a little research on rendering.
Read this answer in context 👍 0All Replies (2)
Seçilmiş Həll
What version of Firefox? What security software besides MS Defender are you running? Windows home or pro? If you're running Windows Pro version, I would test in Windows Sandbox to confirm. https://www.howtogeek.com/399290/how-to-use-windows-10s-new-sandbox-to-safely-test-apps/
The site doesn't allow me to access any samples. Hard to help with something we cannot see or replicate. Show your system specs by posting a screenshot of the performance tab in Task manager.
Here's a little research on rendering.
Modified by jonzn4SUSE
jonzn4SUSE said
What version of Firefox? What security software besides MS Defender are you running?
Thanks for jumping in. Here are the details you asked for:
1)Firefox version: latest stable (updated this week) 2)Windows: Home 3)Security: just Microsoft Defender, nothing additional running in the background
The slowdown happens specifically on pages with heavier drawing previews or viewer embeds. Chrome handles them fine, but Firefox becomes sluggish when the viewer initializes. Even with extensions disabled and cache cleared, the issue returns.
Regarding samples: the site doesn't give open access to files unless a preview is generated from a specific project. That’s why you couldn’t open anything directly. If needed, I can set up a temporary public sample page so it’s easier to test on your side.
Before I do that, is there anything specific you’d want enabled/disabled on the sample (e.g., embedded PDF, SVG viewer, or raw image preview)? That way I can make sure the test page actually helps diagnose the issue.
You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.