Microsoft has released Windows 10 Insider Preview Build 19025 (20H1) to Insiders in the Fast ring. Microsoft introduced a new algorithm designed to detect excessive disk usage and activity, to throttle the Windows Search indexing process during identified peak usage times. The new Windows 10 20H1 build also comes with changes for developers that will prevent searches of popular source repositories such as Git and Visual Studio project folders to further improve disk usage. The most important changes added in this new build are detailed below.
Source: https://www.bleepingcomputer.com/news/microsoft/windows-10-build-19025-with-throttled-search-indexer-out-for-insiders/