2 model DS-2CD2042WD-I, close serial numbers (the older one is 5999XXXXXX the other 6027XXXXXX), Blue Iris 3.33.03. The one with the lower S/N is on top. It has firmware V5.4.0 build 160401, the lower one has V5.4.0 build 160511. The top camera works great at 1280X720 but loses the bottom fifth at 1920X1080. The bottom cam is fine at 1920. Live view from both cameras (even at 2688X1520) is fine.
So, what to do?

So, what to do?
