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Issues with buffer size on UMC204HD (pops and clicks)
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I purchased 3 UMC204HD's for my Wor$p team so we can do remote sessions with Jamkazam.  The issue I am having with my setup is I am getting pops and clicks all the time locally on the device when I listen to the mix from Jamkazam.  This is in a test session with no one else present.  I have the latest ASIO drivers installed and my connection is green.  I have tried my brand new macbook as well as a brand new core i5 Windows laptop.  The macbook has 11ms latency no matter what I do (guess its a macbook thing).  The Windows machine has occasional jitter but that doesn't coincide with the pops and clicks.  My CPU is flat at about 12% 
I am sending a submix to the UMC from my Allen & Heath mixer where I have keyboard, bass, and vocals.  I have monitored the input to the UMC and am 100% sure the audio is clean with no pops clicks etc.  Also I use this same setup to live stream on Sunday's with my mac using Ecamm live.  I monitor the output on the UMC and it sounds absolutely perfect.  So the issue has to be with Jamkazam and my hardware somewhere.  

To troubleshoot with JK and the UMC, I started with 96khz and the pops were real bad.  Backed it down to 44.1 and now it is better but they are still there.  
I'm pretty convinced it is a buffer issue so I tried going into the ASIO settings for the UMC driver and changing the buffer so something a little greater than 8 samples.  Every time I change the value it changes back to 8 as soon as Jamkazam takes over.  When I was messing around with deleting the audio gear and re-adding it, I caused a spike in IO and JK gave me the option of adjusting my buffer size.  I chose the middle setting and now it is set to 256.  I have been listening to audio routed to JK coming back through the UMC while I have been typing this post and it is perfect.  Problem is my latency and frame size went to crap.  Latency went from 3-4ms to 19ms.  Frame size is red at 5ms.  

My question, is it possible to set the buffer size somewhere to a value higher than 8 but lower than 256?  I have to think that I could get a happy medium by slightly increasing this value to 16, 32 etc.   If you have instructions for both mac and PC that would be great.  I would rather be using my macbook but its baseline latency is horrible I guess there is no way to make that better?  I'll settle for anything that works at this point.
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Issues with buffer size on UMC204HD (pops and clicks) - by Seth - 04-11-2020, 12:01 AM

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