The Sonic Generations configuration tool creates a settings file ( GraphicsConfig.cfg ) based on the system's hardware it detects at the moment. The error occurs when the game finds a mismatch between what is recorded in this file and your current system.
This error is extremely common on gaming laptops with switchable graphics (e.g., NVIDIA Optimus or AMD Switchable Graphics). The game detects your Intel integrated GPU at launch, then tries to switch to your NVIDIA/AMD GPU during gameplay. The Sonic Generations configuration tool creates a settings
The game reads the old saved settings, detects a discrepancy with your active hardware, and triggers the hardware mismatch roadblock. 🛠️ Step-by-Step Fixes for Sonic Generations The Sonic Generations configuration tool creates a settings