Any idea why Fortnite spikes in CPU usage every 1 second?

https://preview.redd.it/8i3cdsuee8dg1.png?width=1042&format=png&auto=webp&s=fa8f117a7758debf0e4eb3cc3fe427714d000143

I had at least one other person replicate on very different hardware. I'm on 12700k, AMD Radeon RX 6750 XT, 16GB memory, Win11 25H2, high performance profile.

How the screenshot was produced:

• Start a trace using Windows Performance Recorder, choose First Level Triage or CPU Usage resource profile.
• Start your game, load into a map, look at a wall or wherever.
• Open in Windows Performance Analyzer, go to Utilization by process view. Filter by Fortnite, select and zoom in a bit.

The spikes don't seem dependent on FPS, map, or graphics mode so thinking this is more optimization or built-in timer causing it, haven't dug much deeper just wanted to report it. Happy to share more. Not exactly sure it's affecting user experience, but it might not be ideal either.