Ensure that the game, even if modified or updated, runs smoothly without Steam authentication issues.
If you are running the game on an ultrawide monitor, THE iDOLM@STER Starlit Season will hard-lock your display with restrictive black pillarboxes. You can fix this alongside your v1.61 configuration by utilizing a Hex Editor on the main executable. Target Executable File Hex Search Value Hex Replacement Value F6 41 30 01 48 8B D9 F6 41 30 00 48 8B D9 Removes side pillarboxes completely StarlitSeason-Win64-Shipping.exe 35 FA 0E 3C 27 70 12 Change 0E to 90 Corrects the Field of View (FOV) scaling Essential Troubleshooting Checklist