I would lean against leaving, or at least against leaving now. Leaving too quickly looks bad on your resume; it may close some doors down the road. Also, things can change. Lots of things feel difficult after a few months that won't feel all that bad after a couple of years. But also, corporations change too, as managers come and go.
But I only said that I would lean against it, not that you should definitely stay. How bad an impact is this having on your mental health? It's not worth doing serious damage to your mental health for a resume that looks better. I can't tell you whether you just need a thicker skin, or whether you're risking serious damage.
One thing you might do is plan on leaving at, say, two years. Then, when pressure comes to hit whatever corporate goal of the moment, you can have a different perspective. "I'm leaving in a year and a bit. I don't have to care about your goal, and I don't even have to care about your performance review if I don't work overtime or whatever to try to reach your goal." At that point, you're a tourist, not a resident. The customs of the locals are quaint, but not something you have to live by.