I run Thunderbird 128.12.0esr 64bit on Linux Mint 21.3 Cinnamon. Ever since I updated to this version 128.12.0esr, T-bird email manager has become almost useless. Constant freezing, constant repopulating at times and of course freezing. Including changing my folder configurations. Every time I access the calendar it locks up my system. uses 5gb memory and 5% of CPU Freezing & Slowing the system. Often I have to close it to regain control over the rest of my programs. I have a 32gb RAM, 12th Gen Intel© Core™ i9-12900HK × 14, Each time open T-bird i am not always able to access one of my 5 email accounts. I have been using T-bird for over 10yrs so I have gone through some up/downs, but nothing like this before. "It's so bad that I am trying out Evolution to see if I can switch." I shouldn't ever have any issues with any programs, especially on Linux based on my systems capabilities. I see a lot of people are having issues with this version and nobody seems to be fixing the problems. I need some actionable FIXES or to know this issue is being taken seriously before I abandon T-bird and try out something else. I'd like to have a functional T-bird. Thank you