Depends on the root cause. - Are you hiring senior people or juniors? - How good are the managers? - Are you able to get people to buy in on the need for con

Depends on the root cause. - Are you hiring senior people or juniors? - How good are the managers? - Are you able to get people to buy in on the need for consistency? - Are you micro-managing it or are you delegating? Usually the problems start at the top, so that's where I would start looking for solutions. A really good coach for your CTO if they're not very experienced would be a nice start.