Here is an interesting update - I purchased a Roon Nucleus+ and I gave up on the Vault 2 since that won’t work with Roon even though it is a hardwire LAN connection. Once I replaced the Vault 2, both Node 2’s started playing Roon just fine. In my system, it must be the Vault 2 that is the problem, so it is on its way out the door. I was even able to play 24 bit, 196KHz wav files, too. Wow, I have been fighting this problem since April of 2019 and it is now the end of January.