Mineral processing plants often swing between good days and firefighting because of process variability. Poor PID tuning, manual overrides, orebody changes, and instrument drift all erode stability, leading to oscillating mill loads, unstable flotation froth, and volatile KPIs. The fastest, most cost effective way to restore control is targeted loop tuning. By retuning critical circuits and strengthening control strategies, you can turn oscillation into repeatability, improve recovery and grade, and lay the foundation for advanced process control.