How One Developer Fixed GTA Online's 6-Minute Load Times With a Profiler and a Hunch

In 2021, a solo developer reverse-engineered GTA Online, ran a profiler, and discovered the root cause of its infamous 6-minute load times: a JSON parser doing O(n²) string matching across 63,000 entries. The fix took under 100 lines of code. The lesson is one every developer should internalize.