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 If you went to Settings directly, it would be titled Scale and layout. You can also go to Start Menu > Settings > System > Display. 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
