Ideally, if properly implemented by the driver, using an "event" object for thread synchronization could allow more reliable processing with lower CPU overhead. However, this depends heavily on driver support. Use with caution. Many users discourage the use of Event synchronization in combination with Exclusive mode, because of some drivers lacking the support and simply to try the setup with a poorly implemented audio driver can already result in OS crashing (blue screen). 

State of things in 2017 on Windows 8.1: EventSync is expected to work with with internal audio cards from RealTek and Creative. It is known to cause OS crash with ASUS SONUS and is not working with Creative Labs USB based audio cards.

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