It's Cumulus Media who is providing that low quality streams in the first place, and this is nothing new. They don't want you listening online since they make more money from local over-the-air ads.
Secondly, you're comparing 3 completely different quality streams. It shouldn't be surprising when a 128kbps stream is better than a 62kbps stream, and that the 62kbps stream is better than a 47kbps stream.
I'm also not experiencing any pauses on the WPDH stream.