^^^
Put your reading glasses on for this...
It is both far red or near inferred. But technically it is in the IR spectrum. 660 can't be IR, but 730 can be far-red...a square is a rectangle, but a rectangle is not a square. haha
The biggest differences in yours and mine is the plant count. Yes your space is 5x5 but you only have 4 plants and I doubt they literally took up every inch from the start. For me with more plants that means more light required. For you half a plant could have strong intensity on part of a plant and the other half of it weaker...but as a whole, the plant is receiving good light. With mine, I will have whole plants that are at a disadvantage. And this is before the stretch and things will get much bigger. It is ok that it doesn't cover a 5x5...not too many lights really do. And how dose a rectangle put out a 5x5 square...what's up with all rectangle lights claim square coverage(hps, led, induction)...3x4 is what I would call the true flower foot print.
I never said anything about the PRF feature other than I run 12/12 so it won't matter much to me...but the 660 I benefit from and without it, induction is just a spiffed up floro. The reason I like/got the pontoon is to increase the red of the whole systems spectrum for flower...that's it. It is a fact that cannabis starts flowering at around 14.25hrs of light with 9.75dark naturally and this works even with hps. I run 12/12 and will not change. I don't believe that the extra 2hr is worth the weight(if it even makes a difference) and energy to run it. I will change my mind if I see some great results but as of now it is still being tested. And I run other forms of lights that don't have the IR feature and could possibly fuck the rest of my garden to test something...not happening. Even you are having trouble with the flip on 14/10 and went to 13/11(yes I know you might switch back to 14/10). I run things to their best potential for MY garden.
I know you have a negative view/interpretation about PAR and intensity... but power is power, and since I don't buy crap for my garden...more PAR intensity means more yield. I believe that giving my room the best light intensity is more important than coverage. So if it takes 2 to cover a 5x5 and produce good weight than that is what I want. My point/goal is to have a grow that performs with hps...then a little power saving is nice. So lowering it and using a mover would do that...and limit the negative effects you talk about, by keeping it in motion. If I add some AT's they will only be effecting about the last foot and the 4x4 will still be pretty much all IG. Hell I might just add more plants to extend it to 4x8 and make even more reason to put AT up too. I will keep an eye out for beaching when/if I drop the IG lower.
As for the AOS...it has nothing to do with lights...the jilly's got fucked too and they are pulling through great and are under AT's. Plus as we just discussed my IG room needs more light for all the babies and adding a bigger plant is doing the exact opposite of what I want. Not to mention the last thing AOS needs is more stress. I think the big lemons will show the IG just fine.
Last thought...
If I break down your human sleeping analogy to use 12/12, then the plants are actually getting lazier cause they start sleeping right away...not 2hr in. and thus seems like 14hrs dark to them when it is only 12. And if this were true then IG should make it clear that if not running 14/10 you are going to fuck up your crop and it will take forever to flip...but that doesn't actually happen...the flip speeds up when on 12/12 and also why I think the extended period is not necessary(or even better).
Other than the light schedule(in your opinion) I think that my IG room has the best potential to succeed. I have the strain dialed, soil characteristics known, biggest plants to start, intense pruning and canopy management, and 2 people running the grow.