Your question is Debug performance bottlenecks. 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).
Explain your approach to debugging performance bottlenecks in a React frontend integrated with a Python backend.
Discuss how you would determine whether the bottleneck is in React rendering, browser work, network transfer, Python request handling, database access, or downstream services. Describe the profiling tools, measurements, and code-level evidence you would use, plus how you would verify that a fix improved the correct part of the request path.