I'm really struggling at the moment, brief history is, DP worked until 2pm everyday so he was home to help with our 2 children who had all sorts of behavioural issues.
He was asked by his boss to go 7-5 i asked him not to but he agreed anyway so is now leaving the house at 7 and getting back about 6pm.
I have got over this now and I'm really proud of myself, during this 6 week summer holidays i have really worked hard at being a better Mum and have changed a few things round the house, as a result the children's behaviour is really a lot better and the house is tidy and im actually enjoying being a Mum again. 
However the problem is as soon as P walks through the door and at weekend the atmosphere in the house is hellish, he is constantly shouting at the children and has a really harsh tone of voice with them all the time, he wont play with them and he bickers with DS1 a lot which i think is quite pathetic DS1 is 6 ffs.
The children's behaviour starts rapidly going down hill as soon as he gets in and what is usually a lovely home environment turns sour. Weekends are unbearable the children's behaviour is a nightmare and all i hear is DP sniping and moaning about the kids and he does a lot of sighing and tutting about everything.
I'm a sick of it to the point where sometimes i dread him coming home. 
I appreciate the work he is doing to support us but the difference in life with him at home and when he is at work is noticeably very different.
I don't expect him to read minds and have told him that i have been doing things a little differently and they have been working but he just wont accept it and carries on the way he has always been.