ChatGPT desktop update causes severe bug: system-wide mouse lag and high CPU usage

spirosin · ghdev · 2026-08-14

Multiple users report severe performance issues with the Windows ChatGPT desktop app after updating to version 26.813.12317. The main symptoms include continuous CPU usage of around 10% while idle and severe system-wide lag for mouse and touchpad inputs. Investigations trace the issue to Chromium/V8 engine activity, and it is only temporarily resolved by terminating the process. The problem recurs after the app runs for some time, affecting the user experience across the system.

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