Bjorn Nyland just put out a video about some issues with the new Panasonic 82Kwh battery pack in some "2021" Model 3s which I think is pretty interesting. It appears that the Panasonic pack is much more sensitive to cold temperatures than the older LG pack and the car's software doesn't account for this. In his testing, it was causing a Model 3 Performance with the new pack to have extreme performance issues in the cold while an early 2021 Model 3 Long Range with the old battery pack performed about twice as well once the state of charge dropped below around 50%. It does look like this is something that is easily fixable via software, but I imagine it's a pretty big issue for people in cold climates right now.
In any case, he suggests setting your navigation to a supercharger location even if you're not actually headed there so you can trick the car into "preheating" the battery if you run into the problem.
In any case, he suggests setting your navigation to a supercharger location even if you're not actually headed there so you can trick the car into "preheating" the battery if you run into the problem.