I work for a big tech company and they allow internal employees to switch orgs/teams without affecting my salary or job level. I passed the interviews and just need to decide what I want

Current team situation: - I’ve been on this team for 4 years and get strong performance evals - my project got moved to a different country and they assigned me to an area I’m less passionate in - my new role is a title promotion, I work with senior managers to set strategic direction which feels like a good opportunity - my scope is very large which seems like an opportunity but also I’m juggling a lot (maybe 6 projects at a time). This has caused me to work long hours, sometimes 12 a day - I’m burned out and so is practically everyone on the team, morale is low - the org is dysfunctional, many directors leaving, a lot of politics - my manager is new and isn’t able to provide me much help, I’m on my own and sometimes coaching him how to do his job. I like my skip manager though - since I’ve been on this team so long, I’m very aware of all the politics and I’ve given up trying

New team situation - it’s back in the area I’m most passionate about - the team is well established and doesn’t seem to be quite as dysfunctional (I could be wrong here). I’m naive to the issues so I’m not immediately cynical like on my current team - the manager just got headcount and helped people get promoted, a positive signal about their capabilities - the new work seems interesting but also a bit stressful in terms of being ambiguous

What do you all think: is it better to stay with my existing team where I know the problems and opportunities or try something new with limited information on the issues?