Found from search… Im in Windows 10, and still get blurry widget text in the game, after @Squeaky-Bed 's fix. (Canvas and text blocks are also set to 100% scale…)
But it Editor mode > design tab > the text looks crisp even when zooming out far.
I google searched UMG blurry text, and there’s no solutions One result was for Unity, which has:
In the canvas (Canvas Scaler component), set the “Dynamic Pixels Per Unit” value to something higher.
Does UE4.27 not have a DPI setting for Widget/Canvas/HUDs?