Over 6 years, but I got lucky.

One of the original partners bailed, fed up with the toxicity (they were tearing each other apart, too). A new partner stepped in, took charge, and told the other two to back off. He stripped them of management roles, cut off their direct contact with my team, and made it so they could only go through him and me.

It was still a hassle, but the relief was immense.

[EDITED] This was before I bought Bitcoin. Back then, they had me by the balls.