Worked on optimizing performance testing for Mandelbrot fractal rendering in the dotnet/runtime repository, focusing on the ConsoleMandel test. Introduced a warm-up phase that renders fewer pixels to stabilize measurements and implemented logic to skip benchmarking when zero iterations are specified, reducing unnecessary overhead. These changes improved the efficiency and reliability of performance tests, resulting in faster test cycles and more consistent benchmarking results. Utilized C# for code optimization, performance testing, and unit testing, ensuring that the enhancements integrated smoothly with existing workflows. The work addressed common sources of flakiness and noise in performance benchmarks, supporting tighter CI feedback loops.