I am in strong believe that all these videos claiming "get a div every map" or "raining divs" are just BS clickbait stuff - at least for solo play and not doing these overrun by the abyss maps.
When I did all the juicing (like 120 IIR on gear, 6mod ~100 IIR maps with 3x rare mob distill and running those maps on a 3x tower setup each with 3x quant tablets) I sometimes had back to back maps with a div drop but sometimes could also run 5 maps in a row with not a single div drop. Some streamer also had some testing done with map jucicing and came up with smth like a 0.7div/map result which I would deem a more realistic number for solo play.
Overall I found juicing with tower setups a horrible and tedious strat that, at least to me but maybe I was just unlucky, wasnt really worth the effort. Doing 24/7 T3 Xesht runs was giving me more by getting those T1 lightning fractured breach rings and those ilvl82 rare affix bases (like I sold a perf T1 179%phys Warmonger base for a safe 30div - could have also yolo fractured it and sold for ~115-120div if the fracture hit the T1 phys but I needed the safe income that time).
Map juicing (towers) was imo very overrated but got a lot better now that there's no need for towers anymore.