BlueSound Stinks(!), anyone?

I concur that OP’s problem will likely be solved with a different modem/router. My Bluesound experience with iOS control is rock solid and a pleasure (although BluOS did require - as all new OS does - some getting used to). KEF and Devialet support taught me about modem/routers and the difference it makes. Those based upon certain chips (Puma 7) have such problems.

I ran into some problems with a Bluesound Vault 2i. The first thing I did when it arrived was to rip all 175 of my CD's onto its 2 Terabyte hard drive in "bit perfect" multiple passes it makes over each CD. However, it was impossible to arrange the recordings by composer. It s set up only for pop music: name of the song and name of the performer. I wanted a backup copy of my library and they transferred it to my laptop. My collection took up only 28 GB. I took all the compositions in my library and made a folder for each composer and in each folder the symphonies, concertos, overtures fell into numerical and alphabetical order. CDs having become obsolete, I added some high resolution downloads to my library. I made two copies of my library on two 60 GB flash-drives. I put a flash-drive into the Vault 2i and I use the flash drive and ts folders to play anything from my library. I stream internet radio such as the classical stations when the weather interferes with the signal to my towered antennas pointing to these distant stations.
I would have preferred a simpler way to do all this, but it all works without using the 2 TB internal hard drive which for all I know has moving parts in it, unlike a flash-drive. I also use a much better DAC than the one in the Vault 2i.

I have four units scattered around in my life… And they all work flawlessly. Two are on Wi-Fi and two are wired. I think the user interface is excellent.

I was ready to throw my node 2i in the trash I was so fed up with it - same issues as you. Tried every fix I could find but nothing helped. Then I realized it was being thrown off by the wifi extender in the next room, while I was connecting to the main router downstairs. I switched to the extender and the problems disappeared completely. As others have said, make sure your connection is solid, hardwired if possible. When you get it working, it's a good unit.

I use a Node 2i and have had no problems. One bit of advice to anyone still on wifi: dump it!  The sooner you move your gear to ethernet, the sooner your system will get up to speed and make everything sound faster--except the noise!