Input lag with Unity 4.3 and Windows 8.1

Unity Engine
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1

I’ve installed Unity 4.3 and when i build my game for Windows 8.1 i have a significant input lag of the mouse.
The release notes says that the input lag is reduced with 4.3, but the Windows 8.1 build really have a big input lag. Windows 8 builds are still working fine

2

Same for me. I think this is related to the following section from the 4.3 release notes:

  • Windows Store Apps - Windows 8.1: Input callbacks will now be processed on application thread instead of UI thread, thus reducing input lag.
3

Hmph, try calling appCallbacks.AddCmdLineArg(“-disable-low-latency-presentation-api”); and see if that helps

4

Thanks works with appCallbacks.AddCommandLineArg(“-disable-low-latency-presentation-api”);

5

I’ve just tried your suggestion and it worked for me, thank you! I added the following line of code to the constructor of the App class in the generated project:

appCallbacks.AddCommandLineArg(“-disable-low-latency-presentation-api”);

6

Guys, could you please tell on what devices, and specifically what GPUs those devices have where you’re experiencing that lag.

Also, are you able to reproduce this issue with simple scene.

We’re looking for a repro project to reproduce this.

Thanks

7

The problem occurs on my pc with a GTX 460. I created a very simple scene with just two buttons and still have the input lag when i export to Windows 8.1

8

Do you have all the latest windows updates?

9

Yes Windows 8.1 with all updates installed