Tegra3 looking AWFUL

Hi, I'm updating some of my projects now I have a Tegra3 tablet and.. well, all is looking awful!
I'm using apk's that are working well in other devices, like my mobile phone (Sony Ericson Xperia Neo V with Adreno GPU) and also some ones compiled for Tegra with DXT.
It doesn't matter if I use DXT texture compression or any other, textures always displays in ultra low quality on the Tegra tablet (an Asus Transformer TF300T). Also it doesn't display textures with alpha channel (appearing as completely black objects) and there are no shadows (working fine in the mobile phone)

I downloaded Shadowgun and Dead Trigger and they are working great, the tablet doesn't have any problem for sure.
Any idea? Thanks!

PS: changing Quality Settings at runtime doesn't work. It looks awful from Good to Fantastic.