High internet jitter and high internet latency

[StuartR]

We had a test session last night with 3 people A – B – C with the followingSetup:

• Person A: Windows10 Laptop, Interface Steinberg UR22MK2, Internet 45Mbit/s download, 9Mbit/s upload
  
• Person B: Windows10 Laptop, Interface Behringer UMC404HD, Internet 84Mbit/s download, 38Mbit/s upload
  
• Person C: Mac Laptop, Interface Focusrite Scarlet Solo 3rd Gen, Internet 64Mbit/s download, 13Mbit/s upload
  

Physical Distances:

• A – B: 7 km (3.5 miles)
  
• A – C: 30 km (20 miles)
  
• B – C: 23 km (15 miles)
  

Experiences:

• A => B: reasonable total latency, good sound quality
  B => A: reasonable total latency, high internet jitter, very frequent package loss 100% and low audio Bw Rx resulting in extremely bad sound quality, i.e. frequent and long disruptions (95% of time no audio at all)
  
• A => C: reasonable total latency, good sound quality
  C => A: reasonable total latency, good sound quality
  
• B=> C: high internet latency resulting in high total latency, good sound quality
  C => B: high internet latency resulting in high total latency, good sound quality
  

Questions:
Any explanations for the phenomena described? And more important, any ideas or advice what to do to get rid of the issues, reliable and for good? “Works every now and then” wouldn’t be a good basis for regular band rehearsals.

I spoke briefly with a member of the JK support team yesterday about this issue and they are aware of it and are planning to push out another client update this weekend to address it. Our band has agreed to participate in a test session with JK to verify the problem and potential solution. I'll provide an update as soon as we know more, hopefully by Sunday evening.