Go to System Preferences > Accessibility > Display and check the boxes for Reduce motion and Reduce transparency . This lowers the demand on older graphics processors.
In June 2021, Apple announced . Ben realized that Monterey dropped even more drivers (including legacy audio and SATA controllers). Porting the patcher to Monterey would require rewriting half the tool. Macos Big Sur Patcher
Here is a breakdown of what this feature entails: Go to System Preferences > Accessibility > Display