Node 2 Diagnostics Wi-Fi Signal Accurate or Snake Oil?

Set up my new Node 2 yesterday after second attempt, Phew. And my question is this, Every time i went into the Diagnostics option got different results from poor to good and have been playing 96Khz 24Bit files with no dropouts so far. Have the same situation with a Ruark R2 that only ever shows around 25% signal strength but have never had any dropout problems. I know these two products are like chalk and cheese but what really is the point of having these tools and surely without these if you get dropouts you will almost certainly know it’s down to a poor signal or am i showing my ignorance?. My iPhone X shows full strength at both locations!. Just an observation really.:thinking: