SmartCAD is a 2D CAD app for modern Windows 10 Store. It uses the power of Direct2D for rendering. As a result, it gets to use hardware acceleration for fantastic performance. For large DXF files, the performance gain of SmartCAD compared to LibreCAD is very much noticable. Also, you can use the app for free for now, as it is in beta mode. When the app gets a stable release, it will be free with in app purchase for some specific feature.