no, just that the roku3 is completely connected (data and power) so it's transmitting the screen saver to hdmi-1 but pip itself can be disabled. since i'm using wifi for data and the power is DC, i don't see how there is any possible signal grounding going on through my roku3.
update: while playing SC2 at 1440p fullscreen, I noticed screen skip/flip again. I usually game in windows on my desktop, but SC2 map scrolling requires fullscreen to work best, so... obviously i was not viewing my pip at the same time, but it was still connected as usual.
IMHO this seems to be a poorly engineered logic issue - not something-electro mechanical. my guess is the offending logic is burnt into a chip somewhere, which is why crossover is reluctant to offer a fix as it probably involves dis-assembly beyond an average end user.
there's probably a memory buffer or capacitor they went cheap and underrated that can't handle the required data capacity and frequencies - that's what you get for buying a glorified TV instead of a PC Monitor designed that way from the ground up.
update: was watching roku3 through pip and using my browser - saw a flip/skip. so it seems the problem is not gone - just the intermittent frequency of it's occurrence may have been decreased.Edited by spypet - 9/25/15 at 5:48am