If you running Windows 10 1903 and are experiencing unexplained higher than normal CPU utilization, cumulative update KB4512941 may be the culprit. If you have the Professional edition, you can uninstall this update and defer the monthly cumulative updates for up to 30 days. You maybe able to defer updates for up to 7 days with the Home edition. Another alternative for Home edition users is to use the utility called wushowhide.diagcab and hide the update until Microsoft fixes it. Source: ZDnet Windows 10 1903: Buggy update slows PCs, breaks Desktop Search, says Microsoft | ZDNet Microsoft has finally responded to complaints from some Windows 10 version 1903 users that recent cumulative update KB4512941 is causing CPU usage to surge to between 30% and 40% and in some cases 100%.