ChangeResolution.scpt

use AppleScript version "2.4" -- Yosemite (10.10) or later
use scripting additions

tell application "System Preferences"
	activate
	reveal pane "Displays"
end tell

tell application "System Events"
	tell application process "System Preferences"
		set frontmost to true
		
		repeat until exists tab group 1 of window "LG HDR 5K"
		end repeat
		
		get tab group 1 of window "LG HDR 5K"
		
		tell tab group 1 of window "LG HDR 5K"
			click radio button "Scaled"
			
      (* The 3 here refers to the third option. Change this number to what you want to select from your scaled resolutions *)
			click radio button 3 of radio group 1 of group 1
		end tell
		
	end tell
	
end tell

tell application "System Preferences" to quit