Worked on the Wynntils/Wynntils repository to enhance spell-casting responsiveness by implementing adaptive lag correction for the quick-cast system. Focused on reducing latency perception and improving the accuracy of spell interactions, the developer addressed regressions and ensured compatibility with the core spell system to avoid introducing breaking changes. The solution leveraged Java and algorithm optimization techniques, with a strong emphasis on game development principles. All modifications were validated through comprehensive unit and integration testing, preparing the feature for quality assurance and broader deployment. This work contributed to a more reliable and precise gameplay experience for users engaging with spell-casting mechanics.