Front-end performance issues are very frequently assumed to be UI framework-related. The typical solution when pages load slowly is to optimize front-end code and implement performance-related best practices. Although these strategies may help in some situations, they frequently fail to make meaningful performance improvements.
In various systems, front-end performance is decided even before rendering any UI. The main bottleneck often lies in the back-end APIs, data dependencies, and infrastructure decisions that drive the overall application.