I will try it in english and with an update of the question:

I'm getting an oversize error if I create a sprite with many frames ("example+12.png") even if one frame is only using a resolution of 128x512 pixel.

In A7 such a sprite was seperated into 12 pieces and generates no error.
But A8 seems to take the complete texture and uses the UV-coordinates for animation. But this could be a problem for some graphic cards, or not?

Can I change this behaviour to A7 somehow?