# Full-screen flash app extremely slow

**URL:** <https://forum.kirupa.com/t/full-screen-flash-app-extremely-slow/332266>\
**Category:** Uncategorized\
**Created:** [March 28, 2014, 10:44am UTC](https://forum.kirupa.com/t/full-screen-flash-app-extremely-slow/332266 "2014-03-28T10:44:23Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Orya](https://avatars.discourse-cdn.com/v4/letter/o/90ced4/32.png) [@Orya](https://forum.kirupa.com/u/Orya)\
**Post date:** [March 28, 2014, 10:44am UTC](https://forum.kirupa.com/t/full-screen-flash-app-extremely-slow/332266/1 "2014-03-28T10:44:23Z")

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[COLOR=#333333][FONT=Verdana]Hi.[/FONT][/COLOR]

[COLOR=#333333][FONT=Verdana]I built an AS3 app that I export as AIR-app as installer to be run in full-screen. So I set it to:[/FONT][/COLOR]  
[COLOR=#333333][FONT=Verdana]stage.displayState = StageDisplayState.FULL\_SCREEN\_INTERACTIVE;[/FONT][/COLOR]  
[COLOR=#333333][FONT=Verdana]stage.scaleMode = StageScaleMode.SHOW\_ALL;[/FONT][/COLOR]

[COLOR=#333333][FONT=Verdana]Everything works, except that if in full-screen mode, the App is extremely slow. It’s some sort of gallery, where a new image slides in and an old one slides out. And that animation is really choppy, but only in full-screen. In window-mode, even if it is actually the same size, it’s very very slow.[/FONT][/COLOR]

[COLOR=#333333][FONT=Verdana]I already tried a lot to improve the performance. Use JPGs whenever possible, keep PNGs files tiny (of those only a few small ones are needed), have all objects visibility set to false if they’re currently faded out, and so on.[/FONT][/COLOR]

[COLOR=#333333][FONT=Verdana]Anyone got any advice?[/FONT][/COLOR]

[COLOR=#333333][FONT=Verdana]Why is the app running fluently even on slower computers in windowed mode, but is so slow in full screen even on faster machines?[/FONT][/COLOR]

[COLOR=#333333][FONT=Verdana]Thanks for any help.[/FONT][/COLOR]