has anybody else noticed this about flac audio?

It is not compressed.

Qobuz is better than anything on a CD when truly hi-res, but if you have a really good CD quality stream, you are not going to notice anyway. Either way, Qoboz, Tidal CD quality (not MQA), etc. are all not compressed.

Given this statement, you are pretty much saying that even when you don't hear a difference, there is a difference, so how will you know either way?

people who have streamers I have heard do not have systems that show these flaws.

All:
I noticed differences in FLAC. It depends on the system really. I have two high-end systems, where one system is light years more sensitive to any changes in the source, than the other. Like they say, "Your mileage may vary." 

Here is a question for everyone though. In the 21st century, where storage and bandwidth are dirt cheap, why for the love of Mozart, Frank Zappa, and The Who does anyone use ANY form of compression? 

That's like saying . . . here's some fresh squeezed juice, but wait you can't have yet. I must remove the water, freeze it, thaw it, and add the water back, only then can you have it. Not to worry, because it will taste exactly the same as fresh squeezed. Ya think? Weird, but that analogy is what FLAC does. 

There is absolutely no good technical reason to use any compression at all.

Eliminating all compression surprisingly eliminates any compression related issues. Amazing that. :)

The orange juice metaphor is massively flawed. Decompressing a losslessly compressing file leaves you with EXACTLY the same data as before the compression process.

There is absolutely no good technical reason to not use lossless compression. why waste bandwidth and storage needlessly?

The only compression issues with using FLAC versus WAV are what people want to hear.

I remember reading the "New Methods for Quantifying Sonic Performance" series in the Absolute Sound when it came out.

e.g.
http://www.enjoythemusic.com/magazine/viewpoint/0716/Why_Do_WAV_And_FLAC_Files_Sound_Different.htm

After going through all of the articles I re-ripped all of my 100s of CDs again using dbpoweramp to wav.

I did some tests at the time and thought I heard a difference, but I have no idea if I would hear what I thought I heard if I did it again.

When I do buy HD dowloads I pick wav if the option exists.   I have a large NAS so storage size isn't an issue for me.

also when i made a 1 gb virtual hard drive from my pc's ram memory and import audio into the virtual ram drive and play the audio from the ram the sound quality is improved 100% like listening to the studio master tape can somebody explain this?
This is the same thing when you play a file stored in SSD that isn't noisy as in HDD. Try to change to SSD and you'll be impressed even on a noisy computer.