The adoption rate of Bitcoin's SegWit has significantly influenced its network performance and price. Initially launched in 2017, SegWit aimed to enhance scalability by reducing transaction sizes, thus increasing throughput and lowering fees. As adoption grew—peaking at over 60% in 2019-2020—network congestion eased, mempool sizes shrank, and fees dropped, improving transaction efficiency. For instance, higher adoption periods correlated with blocks exceeding 1.5MB, clearing backlogs swiftly. This efficiency bolstered Bitcoin's utility, potentially supporting price stability or growth during bullish phases. However, adoption has fluctuated, dipping below 50% in 2021 despite rising demand, limiting its full impact. While SegWit optimizes performance, its effect on price is indirect, intertwined with market sentiment and broader adoption trends, suggesting a complex but notable relationship between technical upgrades and economic outcomes.