Horrible EV9 Cold Weather Range

I was getting nearly 300 in warm weather and maybe about 290 at 90% charge. Now in the 30-40 degree F, range has dropped SIGNIFICANTLY. I am down to only 60 miles range at 80%. I brought it into Kia service to be checked out and they basically told me that’s what it is and there is nothing I can do. I’ve seen a lot of posts with owners reporting range dropping to around 200 but I’ve not even been able to get 100 miles range at 80/90%. Have tried garage storage and also charging while running climate but nothing is helping. Super frustrated. Anyone experiencing this??? Thanks for any suggestions and input!