Cutoff (400) pretty tight/ straight forward

Button (650ish) limp calls often preflop. Has not had any showdowns where he didn't have the winning hand when he bet. Has called cbets from myself and others when in 2 or 3 way pots then would make a near psb lead on the turn in/out of pos several times. Limps calls pre regardless of sizing.

Hero (650ish)

A couple people limp in ep/mp and co raises to 10
Button calls
Hero has AsAd and raises to 55
Co calls
Button calls
Flop Js8s8h
I bet 110
Co folds
Button pauses for 20 seconds, asks how much and calls
Turn 9s
Hero checks
Button bets 200
Before hero acts button stands up walks over to watch a friend playing at another table
Hero?

Have button's turn bets been called before and those are the hands being shown? How strong has he been when he shows down? Is he showing up with 1 pair, 2 pair, flushes, straights, sets?

Bet flop bigger and lead turn. As played puke/shove because of pot commitment. Pot should be close to $200 on the flop, and your SPR is too small to get away from AA. If you have history that villain always has it when he bets like this then you can fold, but a couple of hands isn't enough history.

Agree about leading turn, maybe bet/fold $150-175. I think flop bet size is okay, it is 2/3 pot which will get called by weaker pairs, and also give us flexibility on the turn to play for stacks or get away from the hand if things get hairy.

As played, assuming we are going with the "aggressive, pot stealing" read on the villain, I think we have to call turn and call a lot of rivers (or shove if checked to us).

Not sure what calls a shove that we beat on turn except maybe AJ/9T. I don't think QT got this far and there are not a ton of spade draws since we have the Ace of spades.

Edit: Did not realize we were out of position. Imo: Bet/fold turn > CRAI turn > check/call turn , shove river.

Once the turn comes and you check, you are in a fold or shove mode. By calling, you are essentially pot committed. I lean towards a shove as you have the As.

There are plenty of hands that you are ahead of where a PF call would make sense: J9/JT/9T/JQ. While it's certainly possible BTN has QT or 8x in his hand or turned a baby flush, I lean toward the other set of hands that you're currently beating. Even IF he is ahead at this stage in the hand, you have plenty of outs to take the hand down OTR.

I would've bet the turn and called any shove by BTN.

I would lead the turn.

Now I think is a tough spot. I think I would just fold given your reads and the fact that people don't value bet all that light on the turn in LLSNL for the most part.

check flop

The only hand we are beating that plays the Turn this way it T9 as all other draws have a made hand now.

Note that Hero describes Villain has having the winning hand when he leads.

In some rooms, walking away from the table kills the hand. If that's the case, declare it because that's the only way you're going to win this hand. Based on your description, he's not stacking off with less than the near nuts. I'd fold. He's going to shove the river.