Pretty standard 1/3 live game except for one player who limps nearly every hand except when he has a pair or AK. He opens to $30 with these hands and if it's opened to $13/$15 before him he 3-bets to $50. He mostly got folds as you would expect and would say "it wasn't a bluff" each time and shows 22, 55, 66, TT, AK, AA, AA.

I have position on him and given his large raising how should I adjust? Stack sizes, he was sitting behind $600+ most of the time and I am around the $200-$300 stack each time this happened.

Am I ok to GII with a hand like 99? What about AQ? What is my 3-bet range against a guy like this? I think folding is better than simply calling, right?

If I 3-bet with TT and he 4 bets (which he did regardless of villain or holding) and I donking off if stacks go in pre?

How do you know he is 4betting his entire raising range?

Also, if he is only doing this with pairs and AK, then he's raising less than 10% of the time and as such you probably don't have to worry about this guy. Just focus on extracting the most from other hands, such as where he is limping.

If he is opening that narrow of a range to that big of a size then mostly just avoid him when he raises. If you have a big enough pair or AK then reraise. If he had shoved with a AK/22+ range then 99 would be the point to call, but you need something stronger to raise. When you raise to $100 he will fold the weak end of his range and call with the strong end and you will be committed on flops that are not terrible. So you need a better hand for this to be profitable. JJ+ would be around the right point depending on his calling range and play.

If he will fold to 3 bets a good portion of the time then raise sometimes with AQ/TT-88 as more of a semi-bluff. If he has no fold button preflop and gets sticky post with bad pairs then push TT for value also.

This advice is based on effective being < $300. That makes calling with anything bad* and nothing except strong value is playable. Either your hand is good enough to play aggressively for stacks or it isn't worth playing at all. As effective stacks go above $300 you can consider flat calling with some pairs to set mine, how deep you need to be will depend on how he plays post flop. You will want effective to be above $500 to habitually set mine unless villain will reliably lose a lot with over pairs or you can consistently bluff him off low pairs.

* With the exception that against terrible opponents you can sometimes slow play AA/KK.

If you know he is opening and 4-betting 22+/AK then it's mostly just a question of which hands have enough to GII. 88+ has greater than 50% equity against 22+/AK. To account for other players left to act you might want to be slightly tighter. I would float with some suited broadways/AK.

However, it is possible that he plays other hands this way that he just hasn't gotten and shown yet. I'm also curious how you know he 4-bets his entire opening range. How many times have you seen him open/4-bet and what has he shown himself to do it with?

Politely ask him to open for less.

To answer those who ask about how I know he will 4-bet his entire range if the situation arrises, I guess I don't but he was put in that spot twice and 4-bet both times. Once with 55 (against my AA) and once with AA himself which I would expect.

I get the sense he felt pocket pairs were unbeatable and if you are willing to 4-bet a tight player like me with 55 then I'm assuming he's doing it with his entire range.

Adjustment 1: Get the seat change button and try to sit directly to his right. You want him to have position on you so that you can trap the field after his raises.

Adjustment 2: Key more in on how the field is adjusting to him more than anything. Don't 'only' worry about how to get his money.

When you have checkraising position on him on every street, you are watching how the field is adjusting, and you can see who's playing after his raise to every hand, the right moves will make themselves known.