Thanks for your thoughts. The terminal width is 167 which results in 1366, and the terminal height is 48 which results in 768. Have no idea what the font sizes are, or the proper place to look.[/quote]
Font size is not your issue.
Decrease Terminal Height and Width by 1 pt each. Set Fullscreen Type to Windowed Borderless. Right-Click Cataclysm executable, go to compatibility setting and check the box beside Override High DPI scaling behavior. In the dropdown below that says “Scaling Performed by:” select System. This combination of settings should resolve the issue.
Edit: Also make sure that No Scaling is selected in the Graphics menu for Cataclysm under “Scaling Mode”.