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Windows 11 Weather App Uses Excessive RAM and CPU

Tests show the preinstalled app runs as a WebView2 Chromium wrapper that spawns multiple background processes and lifts idle memory and CPU on lower‑end PCs.

Overview

  • Citing recent tests, multiple outlets reported the MSN Weather app consuming roughly 1.2–1.6 GB of RAM in active use, holding about 600 MB while idle, and using notable CPU on some test systems.
  • The high footprint is traced to the app being a WebView2 web wrapper rather than native code, which launches several Chromium-based subprocesses for rendering and utilities.
  • On typical 8 GB machines the app can occupy a large share of memory and contribute to system slowdowns, making everyday tasks feel sluggish for affected users.
  • Practical workarounds advised by reporters include uninstalling the Weather app, blocking its background activity in Settings, or using a browser or third‑party weather app as a lighter alternative.
  • Microsoft has said it will replace some web apps with native versions but has not confirmed a targeted fix or timeline for the Weather/MSN app, and observers note this follows earlier WebView2 performance complaints for other apps.