Your question is Owning an Ambiguous Latency Escalation. 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).
Tell me about a time you had to lead a customer through an ambiguous API latency issue. How did you structure the troubleshooting, communicate along the way, and drive the issue to resolution when the root cause was not immediately clear?