It is a simple to understand what is happening here and I think some credit should be allowed to those who argue and insist that an ethernet switch can make absolutely no audible, sonic, detectable difference and for that matter even a measureable difference can not result and that is because of the TCP/IP protocol which they love to cite and being the explanation for their convictions. These people are the same who have argued about "Perfect Sound Forever" and the source and origin of that claim are place such as as consumer audio magazines and consumer magazines such as Consumer Reports in yoru country and also now things like Wikipedia and they combine that with a basic understanding of how computers work.
I say we should allow these people some credit because they have read and consumed enormous amounts of written content as evidenced by they're liberal use of "cut and paste" to support their arguments with graphs, charts, and "data" to appear "scientific" and then many of them also watch the 'experts" who post You Tube videos and so it is a club like a religion.
What they share has been pointed out bu others here and that is that they have not tried such devices and when they do their expectation bias revs to "high gear" and they are driven to post here sometimes claiming as one has in this thread that they are laughing at us which is "ironic".
So what these people should but won't do is set aside their religion and bible texts and actually conduct some kind of experiment which may or may not reveal and expose their narrow, confined, limited "thinking" which is more simple repetition of hat they have consumed and the rest of the users here can continue to report their experiences having already overcome the "bar" of "digital sound is perfect forever".