# Help.. 3D rotation (rotationY) slow as hell on iPhone (AIR) high definition

**URL:** <https://forum.kirupa.com/t/help-3d-rotation-rotationy-slow-as-hell-on-iphone-air-high-definition/326861>\
**Category:** Uncategorized\
**Created:** [January 17, 2012, 3:55am UTC](https://forum.kirupa.com/t/help-3d-rotation-rotationy-slow-as-hell-on-iphone-air-high-definition/326861 "2012-01-17T03:55:14Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![rei\_flash](https://avatars.discourse-cdn.com/v4/letter/r/ecc23a/32.png) [@rei\_flash](https://forum.kirupa.com/u/rei_flash)\
**Post date:** [January 17, 2012, 3:55am UTC](https://forum.kirupa.com/t/help-3d-rotation-rotationy-slow-as-hell-on-iphone-air-high-definition/326861/1 "2012-01-17T03:55:14Z")

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HELP…  
It is just a simple rotationY I am doing…  
mFlipAnimation = new Tween(this, “rotationY”, Linear.easeIn, this.rotationY, 90, 40, false);

It even performs ok in low resolution export;  
but under high resolution export the speed is SUPER SLOW!!

I have tried cache as bitmap matrix,  
this.cacheAsBitmapMatrix = new Matrix(); //\< only available for AIR  
this.cacheAsBitmap = true;

Only later I found the caching don’t really support 3D rotations…

Is there anyway to get it perform normally under high res??

Thanks!!