Ample feedback from the PC gaming community has allowed the  Dead Rising 3  PC dev team to reproduce and resolve a couple more issues some users were facing, resulting in a second patch, which is live now. 

Change log

• Fixed a problem which was causing the game to crash after booting for many NVidia Optimus players
• Fixed an issue which was causing some NVidia Optimus systems to enumerate video devices incorrectly
• Made a change which improves performance and stability for some users

The patch has been tested against the new GeForce 344.11 WHQL drivers . It is recommended that you update to the latest driver as it contains fixes that address other stability issues.

If you notice any new or persisting issues, please provide any further feedback by using the feedback guidelines outlined  HERE . Thanks for the all your patience and cooperation!