Your question is Optimize an Underperforming Process. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Describe a time you had to optimize a process that was not scaling effectively. Focus on how you identified the bottleneck, what trade-offs you made, and how you got stakeholder buy-in for the change. Keep your answer concrete, including the before and after state, the constraints, and the measurable outcome.