The only reliable solution is to upgrade to a modern version of EasyWorship (Version 7 or newer). These versions are built for Windows 10/11, support modern video codecs, and include necessary security and performance patches.
Build 1.9 uses older DirectX 9 rendering paths. Windows 10’s WDDM (Windows Display Driver Model) 2.x+ often fails to handle the secondary display output (projector/TV) correctly, leading to black screens or frozen outputs. Windows 10 Patch For Easyworship 2009 Build 1.9