1809でタスクマネージャーのCPU使用率がおかしい問題
https://www.pcgamer.com/task-manager-bug-in-windows-10-october-update-misreports-cpu-usage/
https://www.reddit.com/r/Windows10/comments/9l284o/task_manager_is_not_showing_correct_cpu_usage/
https://answers.microsoft.com/ja-jp/windows/forum/windows_10-performance/1809windows10%E3%82%BF%E3%82%B9%E3%82%AF%E3%83%9E/1d0de514-0d37-4c1e-b9cc-5de001be3fc1