I've not read any of the other replies, but to me it looks like you could be vulnerable to counter attacks because of how high up the pitch your wingers are. My experience is that this kind of set-up leaves your fullbacks in a bad position, as the higher up the pitch your wingers are, the less likely they are to track back in time to help your fullback, if they track back at all. You're also going for the possession kind of style, and a high d-line, which often makes the opposition go for a low d-line (the weaker teams), where they try to hit you on the counter. If the opposition is a weaker team, they will probably have a low attacking mentality away from home, which makes it easier to control the game for the home team.
The opposition team is probably more aggressive at home, which probably means they press higher and/or have a more attacking mentality. When they win the ball and manage to get through your high pressing, you may be in for trouble because of the spaces on the flanks between your fullbacks and your wingers. Even if the fullbacks are set to press high, the opposition may hit it long, into the space that the fullback has vacated. This is a common problem for teams who play with a high d-line and press high, especially if you play with wingers that high up the pitch, and especially when you give the opposition time to regroup (slow, short passing).
Against bigger teams your slow short passing may leave you vulnerable to high pressing, where they win the ball in your half and hit you on the break.
What would I do? I would play the wingers lower down the pitch, and maybe compensate by giving the whole midfield more attacking roles. If you have a good team I would increase the passing speed, so it's more likely that your players will be able to pass their way out of high pressing. If you have a weaker team I would play a more direct style. Personally, I play a direct, fast style with a big team, and it works a charm, so you could try that.
Another thing you could do is playing a lower d-line and lower point of engagement. This is because your players may not be up to the task to press high against the best teams, so they pass their way through your high pressing. Maybe it's more likely they will do this at home, where they probably have a more attacking style.