Thunderbird responses to read message or click tab very slow. SOLVED Closed many applications, deleted old mails. Now it look OK again.
My computer is a core i5 with sufficient memory. I use thunderbird for several mailboxes and use it with pop3. So I download the messages to my local computer. When I select another message to read of another tab or delete a message. It often take a few seconds before something happens. What can be de reason for this slowness?
Modified by Wayne Mery
Chosen solution
the last weeks it was OK. But this week it started to become slow again. I noticed in the taskmanager that the memory usage was quite high (not extreme). There were a lot of open applications. So I closed a lot and also cleaned a lot of old mails and restarted windows. Now it look OK again.
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I have lightning enabled. It makes no difference when I disable it. I also disabled the other addons.
When I switch between different mail to be displayed with 75% it goes fast without noticing that it takes time. But it often takes 3 seconds to switch to displaying another mail.
What is your anti-virus software?
Try to start Windows in safe mode with networking enabled. - Win10 https://support.microsoft.com/en-us/help/12376/windows-10-start-your-pc-in-safe-mode
Still in Windows safe mode, start Thunderbird in safe mode. - https://support.mozilla.org/kb/safe-mode
Does the problem go away?
It is a bit difficult to say. It is not immidiately slow after startup. It becomes slow. I will first see what happens when I disable Avira when it is slow and it if it speeds up then. Thanks for the suggestions.
I will first see what happens when I disable Avira
Disabling anti-virus entirely is a bad idea. Below are some generic recommendations wrt anti-virus s/w.
Create an exception in your anti-virus software for the Thunderbird profile folder, so that the anti-virus real-time scanner will not scan it. http://kb.mozillazine.org/Profile_folder_-_Thunderbird
Don't let your anti-virus software scan incoming and outgoing messages.
Don't let your anti-virus software scan attachments.
Don't let your anti-virus software intercept your secure connection to the server.
Remove any add-ons your anti-virus software may have installed in Thunderbird.
Keep it working. http://kb.mozillazine.org/Keep_it_working_-_Thunderbird
And last but not least, backup your Thunderbird profile on a regular basis. https://support.mozilla.org/kb/profiles-where-thunderbird-stores-user-data#w_backing-up-a-profile
johanjonker
Can you tell us your results?
Chosen Solution
the last weeks it was OK. But this week it started to become slow again. I noticed in the taskmanager that the memory usage was quite high (not extreme). There were a lot of open applications. So I closed a lot and also cleaned a lot of old mails and restarted windows. Now it look OK again.
johanjonker
do you have RSS feeds?
No I don't think so
What is "sufficient memory" on your i5?
Hello Wayne, thanks for your time and attention. I have 8G and at this moment 5.3 in use. Now Thunderbird is working normal. I started some extra applications (3D design) and then the usage increases to 5.G and Thunderbird is still working normal. CPU usage is about 10%. The problem is not always there. I will follow your suggestions when it is back again (and I have time ;-)
5.G sis 5.8