I'm revising my previous comment. Over the last 12 hours my recorded SNR performance has significantly changed on an overall basis. My SNR lows have hovered around 5 dB and my peaks have generally been over 8 dB.
What has really caught my eye now is my signal level bars in the top right have all been full, and my packet failure count is low.
Additionally, the SDR is slightly warm to the to the touch rather than very hot. Since actual signal levels appear to the same, the RTL-SDR does outperform the original SDR based on signal-to-noise ratio. Ken