RB750up erratic poe out readings w/6.0r11 upgrade

I’ve modified this unit w/ the cox wireless suggestion as I have others that seem to be rock solid with the mod but this one is feeding 3 rockets which spec out at 6.5 watts each but I’m seeing 750 monitoring spikes all over the place well in excess of 6.5 watts per channel. Software bug? Supply is 24v/2.5a over about 200 ft. of cat5 . I’m seeing line voltage drop 2 volts per rocket as they power up , at least that’s what the 750 is telling me. I’ve other locations with essentially the same setup that don’t swing this wildly. Bad cable? This is driving me crazy and my clients are spontaneously making breaking connection but logs don’t indicate any reboots. I’ve ordered a couple of 3.5 amp 28 v power supplies but I really don’t think that’s going to fix it. This thing is just acting too bizarre. Recommendations/suggestions?

Ok , replaced PS with 28v 3.5a unit. reboots have stopped for the most part , however the 750 monitor for the poe out on all three used poe ports (eth2,eth3,eth4) are still all over the place , no stability at all. Power out readings can go from nothing to 12w in a heartbeat . There is just no consistency to it . They are voraciously erratic.