I would love to be able to diagnose these "buggy" issues, but there are so many variables from one network to another, sadly I think it's almost impossible. I for instance never had any of these issues with stuttering, and loss of connection, both with the Zen Stream, and as well for the Wiim, it just does not happen for me.
Perhaps it's all in what we run in our homes, Is it VPNs, security software, or our providers themselves? Way too many variables for one to have an issue and not another. I do know one thing, it seems on average there are way more issues with Tidal "Connect" than others. I am saying this because in "almost" every update summary for the streamers I have the words "Fixed various playback issues with Tidal" are usually somewhere in the notes, way more than Spotify, or Qobuz, issues. It sometimes leads me to seriously think this has more to do with "piracy" concerns over users who stream "Tidal" service than others. To be more precise it reminds me more of "HDMI Handshake issues" with video providers, and equipment than anything else.
I agree--there are a lot of variables and you're right, Tidal Connect seems to have more issues than others.
As an aside, the thing that concerns me most about the WiiM is privacy. It's inexpensive and the initial install prompts twice for Alexa integration, I think. I have to wonder what the WiiM app is doing in the background and where our data is being sent/shared. I skipped Alexa integration on my phone but still... Maybe I'm just Paranoid Android.