I have a Topping D70s and full MQA decoding works fine, I know I get the full decode as the DAC's display shows MQA when playing MQA files.
So @zainframe in relation to the UPnP stuttering you gave a lot of detail about hardware, everything but the mobile device is running BubbleUPnP.
I'm thinking either BubbleUPnP is resampling the source to stream to Moode's UPnP renderer and its processor is too slow to keep up or there's a network issue that could be causing the stuttering.
For what it's worth here a Moode screenshot and a picture of my DAC when playing an MQA encoded file..
So @zainframe in relation to the UPnP stuttering you gave a lot of detail about hardware, everything but the mobile device is running BubbleUPnP.
I'm thinking either BubbleUPnP is resampling the source to stream to Moode's UPnP renderer and its processor is too slow to keep up or there's a network issue that could be causing the stuttering.
For what it's worth here a Moode screenshot and a picture of my DAC when playing an MQA encoded file..