Can anyone explain this bizzare solver strategy across turn runnouts. It's in SRP, OOP vs IP caller. The OOP player calls a flop 3bet after checking, then donks into the IP player 28% of the time on the turn. I've seen spots where it's even higher.

This is example is on a 942fd board. The 9 turns make sense, as the 3b caller is going to have a lot more top pairs. But the K and the Q??? The five through 7 doesn't make any sense either, as it's not like we make straights with these cards