@eversolo
For me, the "Tidal problem" is somehow solved. I gave Eversolo's suggestions another try and discovered that the delay setting (solution) has no effect on Tidal Connect! This extra "sampling rate switch latency" becomes effective only when using the Eversolo app! If they know it, maybe they won't admit it as their products are officially Tidal Connect certified...
Wiim and Node doesn't need pushing the music later in time but heck, starting glitch-less right is my priority!
So, to conclude, around 1500ms delay and solo app for Tidal seems stable. Don't know what other settings do affect Tidal Connect or not, but solo app is one of the reasons we buy their streamers right?
PS: Would "Eversolo Original sampling-rate audio engine" be the reason for all this, including the better sound?