Distortion using Node 2i as streamer with Denafrips Pontus Dac


Hi all, has anyone had trouble with distortion when coupling a Node 2i streamer with a Denafrips Pontus Dac? 
I have tried using an optical, coax and usb connection from my iMac and after about a half hour to an hour I get distortion from both left and right speakers. 
On Alvin Chee’s recommendation I turned off the “Audio Clock Trim in the audio setting of the Node 2i but I still get the same distortion. 
I did have success being able to stream cd music from an Oppo CD player using an optical cable. 
Has anyone experienced similar problems? Any luck getting it resolved? I’ve only had the Pontus for a few weeks. Any suggestions would be helpful. 
I am thinking about trying another Node 2i to hear if I have the same problems. 
Bill
wgs57
I agree with Parker, don't think its the Node 2. Have mine connected to Tubadour DAC via my USB line from cable co. from DAC to Node via coax cable to integrated amp and use my iPad wirelessly with Tidal music apps.  Hole this helps. 
Just in case this was overlooked, there is no USB output on the Node 2i. The USB port is an input for connecting a flash drive with music. There are only optical and spdif/coax outputs. 
I am sorry. Have the Bluesound Node 2i  as an input to my cable service which is connected to home router via a cat 5 cable. I stand corrected. 
You’re not going to get any improvement when you buy expensive streamer unless you’re going to use built in DAC 
you already have DAC 
I had a node 2i and felt it didn’t do any favors for the DAC I was using at the time. Really I’d get something a little better.