First: It's not about quitting this job. It needs to be about finding the next job. This should be an upward progression of your career toward the next big thin

First: It's not about quitting this job. It needs to be about finding the next job. This should be an upward progression of your career toward the next big thing, not just disconnecting from the old thing. As for when: You said your job pays decently well and you're working with good people. Don't underestimate the value of that! If you're not actively escaping a toxic situation, it's not a good idea to rush your job search. Take your time to find a known good working environment as your next step.