Creating folios for Android

Question

Dear Adobe Community,
before I get this started:
I'm using the InDesign CS6 Digital Publishing Suite,
running on a Professional Subscription
and I'm not a native speaker. So please have mercy with me ;-)
Some time ago, I created ten folios via a multi-folio app with in-app purchases for the Apple iStore, ran into some issues (which were solved by Bob Bringhurst, thanks again) and now I want to expand to Android. The creation itself was easy, the folios are already online, but not without running into some major issues.
To specify my problem:
The starting screen doesn't fit. It just takes as many room as possible and pushes about a third out of the screen. Is there a "Fit Into Screen"-checkbox, I've missed?
The graphics look "rough", bare pixels in a kind of 8-bit-look without the soft edges (or feathers), even though they're PDF. I can't convert them to JPEG, because I'm using the same folios as I do for Apple.
The fading effects of all overlays are also rough. The slideshows, for example, are punching through their content, without letting the pictures fade out into the next. Maybe it's important to mention: They were created via the slideshow-option in the Folio Overlay-menu. The same problem occurs with every appearing and disappearing content. For example: If you activate a map with a button (i.e. telling the app, to switch the object from the empty status 1 to the filled status 2), the app takes a second and the map pops up hard, smashing into the window from one moment to another, without the smooth fade in like it does on Apple products.
And after a while, about a minute or two, the app finally crashes, leaving the customer stuck for a moment, before ejecting him to the main screen of his / her device.
So far, that's my problem. Honestly, I feel like I missed some easy but necessary step for the expansion to Android. Right now, the folios look like some pre-alpha-release an Android (with dull graphics and crashes every 60 seconds), while they work fine and smooth on Apple.
For any hint, I would be grateful.
Bis denn from Germany,
Maximilian

Answer 1

It worked. The native viewer is working smoothly.
One last problem remains, by the way. It's not necessery for me to be solved, but maybe someone else will one day make a use of this:
A two time-object state-button isn't working on Android and Amazon Kindle. For example: I want a drop down-menu to appear in two states, a grey shadow (state 1), which turns into the menu (state 2). This feature is working fine on iOS, but on Android it stucks at state 1. Is the performance of the device not strong enough, to manage this? I can't solve it via the animation tool, because that won't work on Apple devices.