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Question by TheSHEEEP · Dec 06, 2011 at 01:22 PM · renderingmultipleinstancessimultaneous

Multiple Simultaneous Rendering Unity Instances

I already figured out that you can launch multiple instances of your Unity application. This works very well!

Unfortunately, only one of these instances is rendering at a time. The others seem to pause if they lose focus. However, I need all of them to be active and rendering all the time.

How/Is this possible?

Or would that need source code access to the Engine?

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Answer by BiG · Dec 06, 2011 at 01:28 PM

You can use Application.runInBackground = true; to make your process run even when it lose focus.

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avatar image TheSHEEEP · Dec 06, 2011 at 01:34 PM 0
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Well, that was too easy, thanks.

I had expected the problem to be more in-depth than this. :)

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Answer by jpfranssen · Apr 04, 2016 at 09:09 AM

You might also be interested in the following links when running multiple instances.

http://answers.unity3d.com/questions/898733/viewer-gpu-affinity-running-multiple-viewers-on-mu.html

The orginal post here:

http://forum.unity3d.com/threads/use-of-multiple-video-cards-running-multiple-instances-of-a-unity-standalone-player-on-windows.382751/

Turns out that (from unity 5.2), you can use a command-line flag ("-gpu 0") to have each instance render on a separate/dedicated GPU.

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