I’m having serious performance issues with the LanguageTool browser add-on in Firefox and wanted to check if others are experiencing the same problem.
As soon as I enable the LanguageTool extension, my RAM usage increases massively. After a short time, Firefox becomes extremely slow and unresponsive, and in many cases the browser completely crashes. Disabling the add-on immediately fixes the issue, so the problem seems to be clearly related to LanguageTool.
This happens consistently and makes the browser almost unusable while the add-on is active. I really like LanguageTool, but in its current state it’s not workable for me due to the heavy memory consumption and instability.
Is this a known issue? Are there any recommended settings, fixes, or upcoming updates that address this behavior?
I noticed the same. It started about 1-2 weeks ago. Using it on Linux (Debian 13, KDE) with LibreWolf 147.0.3-2.
Whenever I go to certain pages (I think pages with entry-fields which trigger Languagetool), RAM usage skyrockets (easily over 64GB jump just in a few seconds) until my RAM is completely exhausted and my system becomes sluggish/unusable.
Languagetool appears to function though but feels very sluggish, as long I still have RAM left.
If I disable Languagetool, or close the tab which triggered it, the issue goes away, and RAM consumption drops immediately (but never back to levels before the issue started).
I thought I resolved the issue, after I reinstalled Languagetool Extension, bec. I could use the browser without the issue for 2 days, but then it started to happen again.
Currently I have to keep Languagetool disabled as workaround
Using Languagetool with Plus subscription, if that matters. Extension version is 10.0.9.
