Here is a step by step instructions to fix the resolution issue.
Intro
Does your game look like this in borderless?
This guide will show you how to fix this resolution issue.
This guide will show you how to fix this resolution issue.
Browse Local Files
Right-click “The Great Ace Attorney Chronicles” in your Steam library.
Within “Manage,” Click “Browse Local Files.”
Within “Manage,” Click “Browse Local Files.”
TGAAC Properties
Right click “TGAAC.exe” and click “properties.”
Navigate to the “compatibility” tab.
Navigate to the “compatibility” tab.
Change High DPI Settings
Under the compatibility tab, click on change high DPI settings.
Override high DPI scaling behavior
Tick the box under “High DPI scaling override” and click apply.
Launch the Game
The resolution issue should be fixed now.
Thanks to PB Anima for his great guide, all credit to his effort. you can also read the original guide from Steam Community. enjoy the game.