png incl icon

Author: mikehoffms

microsoft-edge/devtools-guide-chromium/device-mode/index-images/performance-warning-icon.png

@@ -287,6 +287,14 @@ To test how quickly your page loads and how it responds at different internet an
 All of the throttling is based upon the normal capability of your laptop or desktop.
 
 
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+## Performance tool's tab has a warning icon when throttling
+
+When throttling is enabled in **Device Emulation**, a warning icon is displayed in the **Performance** tab of the toolbar, to help you know that performance is impacted by throttling:
+
+![Performance tab warning icon](./index-images/performance-warning-icon.png)
+
+
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 #### Throttle the CPU only