DisplayFusion RSS: Firefox is super laggy, almost frozen, with 11.2b3 https://www.displayfusion.com/Discussions/RSS/?TopicID=0197455c-2e30-767a-ada3-e256fd7581c9 DisplayFusion RSS: Firefox is super laggy, almost frozen, with 11.2b3 Wed, 08 Apr 2026 03:34:32 GMT en hourly 1 https://www.displayfusion.com/Discussions/RSS/?TopicID=0197455c-2e30-767a-ada3-e256fd7581c9 RE: Firefox is super laggy, almost frozen, with 11.2b3 https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#15 Fri, 22 Aug 2025 13:25:56 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#15 DisplayFusion Sorry to have taken so long to reply to this post. My PSU shorted out and killed my motherboard , took me a while to get back up and running.

I have not had the chance to do the logging for this, but I can tell you that going into compatability settings , and checking "Disable Titlebar buttons this application only" and "Disable Application Hooks this application only", resolves the issue for me.

I will uncheck those options and run the logger and post it sometime in the next 48 hours. ]]> RE: Firefox is super laggy, almost frozen, with 11.2b3 https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#14 Tue, 29 Jul 2025 07:42:35 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#14 DisplayFusion The issue with downloading files is not only with Firefox, I also have the problem with Brave, it just seems worse with Firefox. ]]> RE: Firefox is super laggy, almost frozen, with 11.2b3 https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#13 Mon, 28 Jul 2025 17:57:46 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#13 DisplayFusion Could you send me an updated debug log from beta 5? Here are the steps:

  • On the DisplayFusion Settings > Troubleshooting tab, change the Logging drop-down to "L1: Log Minimal" and then click "Clear Log"
  • Reproduce the issue and note the time so we'll know where to check in the log file
  • Click the "Export Info to File" button on the Settings > Troubleshooting tab
  • Reply with the file attached
  • Disable debug logging after sending the log
]]> RE: Firefox is super laggy, almost frozen, with 11.2b3 https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#12 Mon, 28 Jul 2025 14:37:45 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#12 DisplayFusion Ok, have tried the new beta for a few days and am sad to report that the issue still remains.
It only becomes a problem if you try to download a file or print something out from Firefox. It will slow the system down to a crawl. If I uninstall DisplayFusion, the problem goes away. Or if I use an older version, the problem goes away. ]]> RE: Firefox is super laggy, almost frozen, with 11.2b3 https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#11 Tue, 15 Jul 2025 17:20:33 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#11 DisplayFusion We've released a new beta that should fix this up, please let me know if you run into any issues after updating.

Thanks! ]]> RE: Firefox is super laggy, almost frozen, with 11.2b3 https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#10 Thu, 03 Jul 2025 18:19:18 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#10 DisplayFusion I'm sorry I wasn't more accurate with my statement. I HAVE rolled back to a stable build, and it is working as expected. I meant to say that I can't use the BETA build, because it makes using a browser impossible.
I'll try the next beta build! I am not using a mission critical setup ( my home pc is for gaming mostly), so I don't mind being a beta tester.:laugh: ]]> RE: Firefox is super laggy, almost frozen, with 11.2b3 https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#9 Wed, 02 Jul 2025 13:45:50 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#9 DisplayFusion No ETA yet, but you can always switch back to the stable version if you would like ]]> RE: Firefox is super laggy, almost frozen, with 11.2b3 https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#8 Sat, 21 Jun 2025 23:30:04 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#8 DisplayFusion Any idea when the next Beta is coming out ? I am still having this issue with Firefox,ESET,and Displayfusion.
I did also report this to ESET too, but haven't heard back from them. This makes Firefox impossible to use ( it can take as long as 5 minutes for a page to fully load). ]]> RE: Firefox is super laggy, almost frozen, with 11.2b3 https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#7 Mon, 09 Jun 2025 14:04:43 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#7 DisplayFusion Yeah it is related to ESET, we have some changes coming in our next beta that should help here. ]]> RE: Firefox is super laggy, almost frozen, with 11.2b3 https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#6 Sun, 08 Jun 2025 03:46:17 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#6 DisplayFusion I'm thinking the Eset combo is the problem. I don't use it and installed 11.2b3 just now and Firefox seems fine. ]]> RE: Firefox is super laggy, almost frozen, with 11.2b3 https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#5 Sun, 08 Jun 2025 01:25:02 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#5 DisplayFusion That is also the combination that I am running. Hmm. ]]> RE: Firefox is super laggy, almost frozen, with 11.2b3 https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#4 Sun, 08 Jun 2025 00:09:07 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#4 DisplayFusion From what I've seen in another thread, the problem might be the combination of DF 11.2b3 + Firefox + Eset antivirus. That's what I have. ]]> RE: Firefox is super laggy, almost frozen, with 11.2b3 https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#3 Fri, 06 Jun 2025 17:12:23 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#3 DisplayFusion Well, I don't know if it's the same as me, but if I launch Firefox while Df beta is already on, Firefox laggs so much that I only have the interface but no page content. ]]> RE: Firefox is super laggy, almost frozen, with 11.2b3 https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#2 Fri, 06 Jun 2025 13:47:06 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9#2 DisplayFusion I'm seeing nearly the same issue, except that in my case it seems to prevent Firefox from starting at all. ]]> Firefox is super laggy, almost frozen, with 11.2b3 https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9 Fri, 06 Jun 2025 13:09:19 GMT Binary Fortress Software https://www.displayfusion.com/Discussions/View/firefox-is-super-laggy-almost-frozen-with-112b3/?ID=0197455c-2e30-767a-ada3-e256fd7581c9 DisplayFusion Hi. I'm on Windows 10 pro. I tried in normal and debug (no extension) modes, same problem: Firefox doesn't respond at all if DF is running. As soon as DF is closed, Firefox reacts again. Same result when DF is launched first or Firefox first. It's quite strange as there's no CPU peak, and all the rest seems to run normally. ]]>