Bad performance in windows 8.1

Bad performance in windows 8.1
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I’m currently developing an app for windows 8.1, but if I put an HD background image on an empty scene the FPS drastically falls down by 20 frames. If I continue to add other sprites the FPS falls further.
Any ideas on what could cause this?

I’m using Cocos2d-x v2.2.2 with Windows 8.1 and VS2013


Is this the debug build or release? Do a release build and check… people have found significant improvement …


I tried with both debug and release builds, but I get the same results.