Hi @DavidJohnson7, are you using @arcgis/core?
When an ArcGIS JavaScript Maps SDK app loads, there are variety of HTTP request types depending on what functionality is in your app. These include .js, vector tiles, queries, localization files (json), css and sprites. The JavaScript-based dependencies should only be a relatively small number of the total HTTP requests needed to load your app.
Angular 13 uses Webpack, and that typically does a very good job of minimizing the number of SDK JavaScript bundles that are needed for the initial app load. We track this information here: https://github.com/Esri/jsapi-resources/blob/main/esm-samples/.metrics/.
I'm not familiar with your architecture, such as number of simultaneous users and hardware sizing. However, with regards to HTTP requests overloading your server, the most definitive approach would be to host the ArcGIS assets locally, and tweak your HTTP caching settings for those assets and the bundled modules. If you don't host the assets locally, then you'll be using the ArcGIS CDN and it's edge server caching rules, which may or may not be appropriate for your unique requirements. Is that something you have looked at?