Google released the latest Chrome OS update – Chrome OS 91.0.4472.147 last week. Despite being a stable update, the users are reporting performance issues after updating. It is causing issues in basic tasks like typing and opening apps. Troubleshooting is also not helping to solve the problem. Many users reported the issue and also mentioned that the issue still exists after performing power wash and other troubleshooting steps. The issue was first reported on Reddit, it also provided the real problem causing the performance drop.
The issue is related to CPU usage, overworking of the CPU is causing a drop in performance. On checking the Diagnostics app, it was seen that the clock speed is dropped to 0.80GHz and CPU usage often reaches up to 100%. However, not every device is having the issue, devices with hatch and grunt boards are having this issue. It was noticeable immediately after updating the Chrome OS. The problem makes the Chromebook almost unable to use.
If you are facing this issue, you can report it to the Chromium bugs tracker. You can also press alt+shift+i on your Chromebook to send feedback to the Chrome OS team. Switching to the Beta channel may also help you temporarily. Those who have not updated to the latest Chrome OS should hold back for a little while for Google to fix the issue.