[Hiphopopotamus]

So you're setup is this, right?

Shield -> TV -> Receiver/Amp

In the Shield make sure you have it set to 5.1 for the audio, and then passthrough for DTS and DD, but not for DTS-HD MA and not for TrueHD, and see if that helps you. I'm just guessing here though...

first, yes - that's my setup connections.

but i don't know, where (in Shield) i can change the audio settings to 5.1 and passthrough. i have only settings for USB audio (stereo, stereo HQ and 5.1). that's all.

In Kodi settings, not Shield settings.