hello,is it better to 4bet or flat here given the stacks and position?
villain is 74/40/18 3.6af 511 hands

Depends. What other hands do you 4bet with?

Who cares about balancing your 4bet range against VPIP 74 guy?

Problem is that villain puts you on aces and SPR will be around 1,5. If his calling range has pocket pairs, you can shove any flop and be sure that it's +EV in the long run. Even if he folds some pocket pairs to your 4bet (which I doubt), SPR 1,5 is the borderline where you can shove any flop and villain can't exploit you.

So if you don't feel comfortable with calling his 3bet and let him rep aces on the flop, just 4bet and get it in on most flops. It's not the most +EV line, but in the long run it's marginally +EV. Variance goes through the roof but that shouldn't be a problem as you are sitting 200bb deep with an aggro villain. One thing to concider is that there are 2 villains 200bb deep effective that have straight position on you. I would sit out.

thanks for the feedback guys!

here in this situation only good AAxx propably,but the villain is terrible i dont think he is thinking about my hand

What is the SPR for shoving? 1?

This guy loves pressing the pot button, sometimes I put in a small raise to like $6-7 dollars, we leave ourself a higher spr on the flop - can get away cheaper if flop doesn't suit our hand and gives him rope to put more money in pre. You can do this with lots of hands that are crushing his 3b range. Good rundowns, ds kings etc.

If opponent continues with a good ace-cracking hands (no ace, no pairs) it's +EV line to 3bet/4bet and shove any flop against one player if SPR is under 1,5. If it goes over 1,5 and you shove any flop with your aces, it's not +EV line anymore.

it depends on your postflop skills. i hate to play bad aces oop tho so id just call the 2.90

Variance is your friend

This is most likely true but in some instances, potting is probably not the best option based on the board texture.