Ipad Cross resolution with GPU rendermode

Using Flash CS6 and the newest air sdk v14.

My 1024x768 air for iPad app gains a dramatic performance boost when render mode GPU is enabled. However if I set resolution to high the app is only half the screen size on the new 2048x1536 iPads, and if I set to standard the quality is bad.

Direct and cpu render modes have pretty bad performance on all iPads. It's just very simple app, just images buttons and videos in their simplest form with a few page in and out tweens..

Is there any solution to getting good performance & quality on both iPad resolutions?

Thanks,

Matt