I ran a sim on my solver for EP vs LP SRP 40 bb. I gave a flop bet sizes of 30,60,100, 120%. I see some spots where the solver prefers to bet 100-120%. Is this something I can follow in live MTTs?

Is it a significant preference?
What does PIO Compare Actions tell you about the actual difference in EV between those options?

I am using GTO+. By compare actions do you mean between the different bet sizings? Or comparing it with sims without the overbearing option?

Ah ok, not using gto+ here

I was referring to whether there's a significant difference in EV between 30, 60, 100, 120 in your sim. It's called Compare Actions in PIO

Is this based on tournament stack sizes? With 20-30xBB effective, you may not need to pot the flop to get stacks in by the river.

It seems like regs these days are mostly cbetting less than half pot. Is that was you solver recommends in most cases. Close to pot sized cbets seem rare, not to mention overbets.

There are 2 forces towards smaller bet sizes in tournaments. One is effective stack size. As mentioned above, you don't need to go big to get stacks in at low SPRs. There is a magic number: 13. That is the SPR where you can bet pot 3 streets and get all in. Anything less than that, you don't need pot sized bets. There may be spots where the SPR is slightly higher than 4, where you want to get in stacks by the turn, and an overbet is probably part of a GTO strategy.

The other factor is ICM; as a general rule any time all of the chips go in the center, everyone else in the tournament gains. This effect is tiny very early in the tournament when stacks are deep, but it exists nonetheless. That has a cascading effect on bet sizes.

One time you do want to pressure your opponent is when ICM is moderate or greater, and you have them covered substantially. Say, you have 3x average, and Villain has slightly less than average. Leveraging his stack for his tournament life is plus ev for you. His risk reward on going fro .7, say, to 1.4 is not nearly twice as good as busting. Going from 3x to 2.3 for you is not nearly as bad.

I am assuming that it is SPR (Stack to Pot Ratio) and not SRP (Single Raised Pot) that is the question.

In live tournaments a bet of 100%+ on the flop is extremely rare. When it is done it is typically by somebody who always does it. These people don't tend to last very long.

I think more importantly we need to know how many people are in the hand. Do we have position on everyone? If we are HU are we against the BB?

I would think that the best time to do something like this would be if we were HU & OOP and the 120% bet would be about 25% of stack sizes where we are happy to get it in on the flop or the turn. My range would be things like overpairs and flush draws with at least one over or multi draws where we are close to 50% equity if we are all in on the flop.

The problem is that live you will get very few callers unless they are very strong. You will especially be inducing people with flush draws or double draws to shove OOP in which case they will be getting the right price.

The one time live it was done to me where I caved was in a hand where I had TT and raised in EP. The guy on the BTN 3-bet and I called. The flop came 973r and I checked. I was planning on calling but the BTN bet > Pot. This meant we were going to be all in by the river. So after tanking I folded. He showed AK...

So I guess it can work as a bluff with air. But in my example with an SPR of 40 I think I might very well have c/r'd all-in (which I did another time with JJ vs AK in position and amazingly he called my flop raise all-in thinking I was on a draw and bluffing).