Initial load of My device page is slow on normal connection

[jmwatts]

Fleet version: v4.60.0

Web browser and operating system: Chrome 131.0.6778.110 running on macOS (Safari as well)

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💥  Actual behavior

My device page takes 12 seconds to load

Screen.Recording.2024-12-12.at.3.25.36.PM.mov

NOTE: In the video, Chrome Dev Tools didn't capture the Timing on first load but you can see it took a long time. I refreshed the page without cache around 0:47 to show that it's the bundle.js download that's taking the bulk of time.

🧑‍💻  Steps to reproduce

1. Enroll a new host into Fleet and open the My device page for the first time
   OR
   clear your browser cache and then try to load the My device page
   OR
   clear your browser cache and try to load the main Fleet webapp page

🕯️ Expected Results

My device page does not take a long time to load

🕯️ Additional info:

Related tickets: #6803 and #17697
Filing this as the time to load seems to have gotten longer recently.
The video was created on a device with ~90Mbps download internet speed.