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[[Asynchronous Spacewarp]] or '''ASW''' applies animation detection, camera [[translation]], and head translation to previous frames in order to predict the next frame. As a result, motion is smoothed and applications can run on lower performance hardware. ASW expends upon [[Asynchronous Timewarp]] (ATW), which only applies to the [[rotational tracking]] of the head.
The Rift operates at 90Hz. When an application fails to submit frames at 90Hz, the Rift runtime drops the application down to 45Hz with ASW providing each intermediate frame. Asynchronous SpaceWarp (ASW) enables users to run the Oculus Rift on lower specification hardware than our current recommended specification.
ASW tends to predict linear motion better than non-linear motion. If your application is dropping frames, you can either adjust the resolution or simply allow ASW to take over.
ASW is available with the release of the Oculus 1.10 runtime. It will be enabled across all ranges of hardware and systems that support the feature, and activated for all applications. ASW will automatically engage whenever the application needs extra time for rendering. For developers the [[Oculus Debug Tool]] will provide support for controlling ASW for development purposes.