Worked on performance optimization for the TCS module in the microsoft/BCApps repository, focusing on backend improvements using AL and Dynamics 365 Business Central. Addressed lag in high-workflow scenarios by removing redundant CurrPage.SaveRecord() calls before tax engine calculations, which reduced unnecessary database writes and per-line workflow evaluations. This change brought the TCS module in line with existing optimizations for GST, TDS, and Tax Base modules, ensuring consistency across tax-related features. The update targeted General Journal, Cash/Bank, and related TCS journal pages, resulting in improved user-facing response times and more efficient processing under heavy load without introducing new bugs.