I think the answer to what's more important may differ for different people, but for myself, I have also worked in a toxic environment, and toxic is different than just stressful. It might be worth being a bit busy and stressed to do what you love, but toxicity for me really started to affect my mental health. I have decided unless I absolutely have to, that I won't work in a toxic environment again. At least at a less stressful job you would have time to focus on things besides the toxic environment, and maybe when less stressed you can think about future career moves, if you don't think you'd like being in that line of work long term. Or you could stay there, and add more fulfilling things to your life outside of work like hobbies or volunteer work? Just some ideas. I think your mental health is most important. Sorry you are in this situation.