[noggin]

One of the main reasons I was purchasing the Nvidia Shield was because I was having similar HDMI drop outs using Rpi2--->Panasonic AVR--->BenQ W1070+ projector.

There was a known problem on the Pi which got resolved, which was usually the cause of drop-outs when connected via an AVR. The Pi/Pi 2 would vary its HDMI clock rate slightly to avoid dropping/duping frames. Most TVs were happy with this variation, but many AVRs weren't and lost sync (so you got a video drop out on your amp).

This was fixed with new firmware and a config.txt setting "hdmi_clock_change_limit" which allowed you to limit the speed the clock could change (the numbers were different between Pi and PI 2). (The ODroid C1 had a very similar issue too)

Cheers Noggin for the heads up.

Anywhere i can read more on this problem/resolution for Rpi2 ?

Try typing "hdmi_clock_change_limit" into the Forum search box? There are a couple of threads there that might be of use.