If you’re running into crashes with Kingdom Hearts HD 1.5 + 2.5 ReMIX on an AMD GPU (like the 7900 XT or higher), you can assign the game to run specifically on your high-performance graphics card.

Here’s how to do it on Windows 11:

Step 1: Open Display Settings:

• Right-click on your desktop and choose Display settings.
  
  

Step 2: Go to Graphics Settings:

• Scroll down and click on Graphics under the System section.
  
  

Step 3: Find Kingdom Hearts:

• In the Graphics settings window, search for Kingdom Hearts HD 1.5 + 2.5 ReMIX.
• If the game isn’t listed, click Browse and find the game's executable file (.exe).
  
  

Step 4: Set to Specific GPU:

• Select Options next to Kingdom Hearts, and then choose Specific GPU under Graphics preference.
• In the dropdown, select AMD Radeon (TM) Graphics (If you don't have this option you do not have  an intergrated GPU).
  
  

Step 5: Save and Restart:

• Click Save and close the settings.
• Restart Kingdom Hearts and enjoy smoother gameplay!