I can't fold after I've invested 44bb post flop. They can be shoving with worse over pairs and draws. GG if they have sets but after the cbet I can't fold here.

As Harvie said, there's worse pairs that may shove, also you see some limpers with A9 who might end up doing this, flush draws etc. You have to go with it really, once you've invested what you have... you're priced in with a good hand and big pot so GL, unlucky if you run into sets but I can't fold here now.

I'm stacking off if we're 100bb deep, but we're about 145bb deep with the BB who cold called a 3 bet.

If we think he's happy to stack off QQ on the flop being so deep, then he's going to stack it pre flop at least some percentage of the time. In your experience, are you seeing many villains in these games auto stacking any overpair in a 3 bet pot? At 5NL I just don't see it. Players are just so passive and want to see a showdown with TT here more often than not.

I think u still have 100bb stack behind ? i would just fold, u are getting raise and 3betted on that flop, i see pretty difficult that none of them has 2pair+, probably cause of the action pre anatolifire look like probably has a set, the other guy can have a overpair. If u put your hand against a guy who probably has a set or a combo draw, dont think our equity is that good.

It's close but given the loose-passive button going over the top I'd err on the side of caution and just muck it on the flop.

Played it perfectly IMO. I'm not folding for this price unless we have a very very strong read. At 5nl generally we shouldn't be folding over pairs in 3b pots.