I have similar problems with similar ratios. I suspect core motivation is part of it, their reason for picking software development. People that pick it for mo

I have similar problems with similar ratios. I suspect core motivation is part of it, their reason for picking software development. People that pick it for money perform poorly. Another observation, people with young kids at home just don't have focus time to get work done. You should be having regular 1:1's with each person to talk to them about what they've got going on in their lives, problems/barriers, gripes, career planning stuff, general coaching and feedback. Oftentimes it is something outside of work that impacts their work. Nudging under-performers isn't micromanaging. Your company may also have a process to start documenting the lack of performance in advance of letting them go. If they've proven they aren't completing work on time then it would be appropriate to talk with your manager/HR about letting someone go.