I have Ubuntu 22.04 LTS, 8GB RAM, i5 4-Core Intel CPU, SSD, It's a Laptop.
I am facing same issue, I have installed Thunderbird 91.8.0 (64-bit), and the CPU usage is high and the interface is not responsive, the cursor lags, feels heavy while using. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1959747 Title: [upstream] Very high CPU and slow responsiveness in Thunderbird 91 To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/1959747/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs