Posted the hand just to act as an example. I ran this board through GTO+ as I was wondering what sizing the solver prefers when OOP checks this flop. I was quite surprised to see that it exclusively uses the 75% sizing as I thought IP would be incentivised to bet small with a wider range as it has a lot of vulnerable hands that benefit from protection. Does anyone know why solver prefers this choice of sizing? I gave IP and OOP 3 bet sizings (33,50,75) and a 2.8x raise size.Thanks

GTO+ strategy

Edit: Ran a couple more sims for different monotone flops. A72, AKQ, Q92, all use the 75% sizing exclusively but on the lower boards like 752 it tends to favour 1/3p. Maybe this is due to having more thin value protection bets on the lower boards like the middling pairs?