The first patch for the Windows edition of Deus Ex: Mankind Divided is now available. This should fix crashes and "critical issues" some users have experienced. Square Enix explains this should be an improvement for all users, but the previous version is still offered as a beta if you want to revert. The details also discusses performance using the game's most demanding settings:

The following fixes are in this patch:

• Fixed crashes caused by third-party programs interfering with the game.
• Fixed crash that occurred after viewing the intro videos.
• Fixed issue that could cause a crash at the end of the Prague intro scene.
• Fixed mouse invert setting not being displayed correctly in the options menu.

Note about performance
We are seeing people reporting performance issues when playing the game on Very High/Ultra settings with MSAA set to 2x, 4x, or 8x. We would like to emphasize again that these options are very demanding.

We recommend everyone that is running at recommended spec or higher to start with the High Preset and MSAA turned off, and then tweak the options to optimize your experience.

While we expect this patch to be an improvement for everyone, if you do have trouble with this patch and prefer to stay on the old version we have made a Beta available on Steam, v1.0_build 524.6, that can be used to switch back to the previous version.

We will keep monitoring for feedback and will release further patches as it seems required. We always welcome your feedback!