What are your settings for 3-1-2-3W-1 ? (you mean 3DC I think ?)
I played against it several times last season and it took all my small change to get through this defense eventhough there is no one defening on the wings.
I meant all three formations: 3n-1-2-3w-1, 3w-1-2-3w-1 and 4-2-3w-1. They are the same, más o menos.
I use short passes (may change to mixed later), attacking or normal mentality, the rest is off/mixed. Add high pressing and m2m to your taste.