CRITICAL REGRESSION: Build 26200 broke Mic, Game FPS & Cursors!

The microphone failure, game-performance drop, and cursor changes began after Insider build 26200, so treat this as a preview regression until driver causes are ruled out. Install the newest flight because Insider fixes arrive in later builds. Then install the PC manufacturer’s audio, graphics, chipset, and mouse drivers, and test the microphone in Settings > System > Sound without overlays or enhancement utilities. Compare one game with overlays, recording tools, and hardware-accelerated GPU scheduling disabled. If symptoms started together and disappear on the previous build, preserve that comparison. Within the rollback window, Settings > System > Recovery > Go back can restore the earlier build while keeping personal files, although later apps and drivers may be removed. Press Windows+F after reproducing each issue and submit separate Feedback Hub reports with traces. Insider builds are less stable than production builds; use a production release on a machine that must remain reliable.