Unlikely you get 1 gigabit from the wireless access point. If that access point has ethernet out connection try to wire your laptop to it and do a speed test.
I kind of doubt it is the bandwidth/speed issue though but I could be wrong so let’s eliminate that as a culprit.
Next move on to eliminate the USB as an issue. If your new USB cable doesn’t fix the problem, try a non usb connection to your dac (spdif, toslink or AES/EBU). See if that resolves it. Does sound like the DAC and streamer compatibility issues.
Also, post this problem on the Auralic forum. You might get some help there from Mr. Auralic himself.