Background:
I am currently studying Episode 7 on selective vs. unselective c-betting of the From the Ground Up course. I loved the episode and I do feel like I aquired an understanding of when to range c-bet as BU vs. BB in SRPs and when to go for a selective/polarized strategy. The general idea that Peter Clarke outlines is that the BB (preflop caller, capped) starts with an equity disadvantage vs. the BU's uncapped opening range and seeks for any kind of flop that has equalization potential.

So BU prefers:
1. high card flops that interconnect well with opening range (increasing range advantage)
2. dry flops that leave little room for the BB to catch up (preserving range advantage)

The BB in turn prefers middling cards and connected boards on which he can equalize Hero's value hands, most often of the one pair type, through a lot of two pair combos and flush/straight draws.

Peter Clarke's take on high card/dry flops:
On favorable flops for the BU where we have equity and nut advantage such as Q73r or AK3r, Peter Clarke advocates for a range c-bet of 1/3 potsize with all of BU's holdings. He even explicitly states that "a solver would endorse these strategies".

PioSolver:
I ran these flops in Pio in order to train myself in when to range c-bet vs. when to go for selective betting. The issue is that basically no matter what kind of flop texture I insert (even the most favorable boards for the BU such as HHLr), Pio chooses a selective strategy, never goes for a range c-bet, and checks back up to 40% of the opening range. This pattern is robust for different boards, range widths, and allowed bet sizes (only 33%, 33% and 67%).

My best take on this is that we humans need to simplify and go for range bets even with wide ranges when the spot is favorable while a solver has no reason to simplify. Still, that seems to contradict the episode of FTGU. What's your take on this? Here's a solution for a AK3r flop.