Phil,
I think we have conversed in other threads. I haven't found an HD WiFi camera system that doesn't sacrifice frame rate and/or the pauses you experienced.
Many more affordable systems with operate at an acceptable 24 FPS with a few seconds of latency but when the signal dropped even slightly, the image would freeze and it was anywhere 2 to 6 seconds before the live image would resume. I did come across a system that will do a live HD image with near zero latency and could do this at 30+ FPS. It was over $1,000 in cost and had no way of fitting in an O Gauge model.
It comes down to a simple list of features when considering a live wireless camera.
But you can only pick two:
1) Affordable
2) HD Image output without static
3) Excellent Frame rate with low latency & no choppy output