I have a Fire TV app built with the Web App Starter Kit, and have noticed it's pretty slow to load initially. In Chrome DevTools, I recorded the performance and see it takes 292.90 ms to load (which triggers a performance warning from Chrome... see screenshots).
Usually Chrome points you to a js file that's in need of editing to help the performance, but here, it's just the loading Event. Are there any specific places in the WASK this would be pointing to? My thought was it could be the loadInitialData function in model-json.js (perhaps my API call to load the initial data on the home screen is flawed?), but was wondering if there is anywhere else I can check or anything else I can do to help speed up performance.