I recently downloaded the Photoshop CC 2018 update and it reset my zoom settings. So like a lot of people, I looked up a solution to this. I tried setting the scaling to 100% and restarting the program. Nothing. Then, I tried setting it to 200%. Nothing still. I also tried setting it to 100% and restarting my computer. Nothing again. Please help.
Did you set your Windows 10 Display Scaling to 200% for the display you want scaled ? Not Photoshop CC 2018 Preference UI Scale that not used in version 19.1.1
On Windows 10 Creators Update and later versions, Photoshop now offers a full range of choices for UI scaling—from 100% through 400% in 25% increments. This enhancement makes the Photoshop user interface looks crisp and sharp regardless of the pixel density of your monitor. Photoshop automatically adjusts its resolution based on your Windows settings.