I am seeing myself change my style of play to weak, tight, nit the deeper I get. From 40-150 BB I can play well but around the 200-250+BB range I start to play bad poker. I need to fix this to evolve. Here is an example of a hand that I would play 100% differently SS.

Villian is a betting machine. He is a super loose player that accumulates chips at a great rate and just never stops. Obviously his success depends on how well he is running. But he is opening 90% of the pots. Today and lately he has been winning. He had 15k at a 1/2/5 game a couple weeks ago. I think that villain respects my game but he has position on me. He knows that I can construct ranges and I wont make big equity mistakes postflop. I have a solid checking range bc I have CR him in the past where he has folded BUT this was when I was a shorter stack. Deep stack, I honestly have almost no CR range. I have seen him not cbet and not bet turns vs me when he will fire near 100% of the time vs others.

Villian and I both have about $2,000.
He is UTG here and makes it $15 (standard open) and we get 2 callers. I am in the BB w AA72ssdd and I make it $60 and he calls and we get 2 other callers. Flop is 9s3h5c and I check, villain bets $250, folds to me. I consider folding here!!!! This is a horrible way for me to play the flop but for some reason I shut down and consider check/folding this flop. I end up calling, but not excited to play a big pot OOP vs the most agro villain I have seen. Turn is Qs which now give me a FD. I obviously check which is what I would normally do I think with the intention of calling 80% and raising 20% but never folding. Villian bets $600 and I fold!

I messed this hand up on almost every street. I need help. Can anyone help me here? I will give you all the info you need but I need help... Thanks