<![CDATA[Current higher education infrastructure heavily relies on Learning Management Systems (LMS) as digital hubs for academic interaction. Universitas Pamulang implemented Mentari UNPAM to support large-scale online learning. However, the platform’s usability and User Experience (UX) have not been empirically assessed using standardized metrics. This lack of evidence contributes to increased cognitive load for users and limits the implementation of User-Centered Design (UCD). This study aims to evaluate the usability level of Mentari UNPAM and propose interface redesign recommendations. A descriptive quantitative approach was conducted by administering the System Usability Scale (SUS) to 150 active Informatics Engineering students. The results show an average SUS score of 68.27. Based on the Sauro-Lewis scale, this corresponds to a Fair-to-Good range with an Acceptable rating. Data distribution analysis further indicates satisfaction polarization associated with interaction friction during the First-Time User Experience (FTUE) phase, navigation disorientation, and server latency during peak traffic. As mitigation, the study recommends restructuring the layout hierarchy of critical features, integrating breadcrumb navigation, providing digital onboarding, and optimizing server architecture.]]>
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