1. Launch DOS2. 2. Modify CPU affinity in Process Lasso. 3. Game works. 4. Exit game. 5. Launch game - game crashes (won't launch). 6. Delete CPU affinity preset from Process Lasso. 7. Launch game. 8. Game works!
For Baldur's Gate 3, one person reported a conflict with Process Lasso's 'core engine' being on, even with the settings for the game restored to default.