I upgraded from Catalina to Big Sur (without formatting), and then used Onyx to clear all the caches on my Mac. It works perfectly.
Mac mini 2012, 16gb ram, 512 ssd.
After many years, I tried Django again and it has left me quite cold. Both Rails and Laravel have more tools to be productive.
In both Rails and Laravel, with a couple of commands you generate all the code to have the authentication system (frontend included), in Django you have to write it yourself (how many millions of times has this part been written? Does the world need you to do it again?).
Scaffolding: Both Laravel and Rails have tools to generate the code for a simple CRUD, Django does not.