

Even though Windows auto-adjusts the scale to make text and windows larger on the HDTV, you may need to tweak it because sliding windows to a different screen may alter its size, which is not always beneficial. When you use multiple monitors and extend your screen, the scaling may be different, such as a default 1080P screen and a 4K HDTV. Using Windows 10 Display Scaling for Two or More Monitors

You can also go to Start Menu > Settings > System > Display. Type “ scaling” into the Cortana search box, then click Make everything bigger.Scaling allows your main monitor to show enlarged text, images, and icons for better viewing experiences. How to Use Windows 10 Scaling on One Screen
