Constantly Crashing in duo play

Have tried a couple different strats being, Abyss with edifice on deli orbbed T17 and Breach, beyond, deli orbbed t16.5s We get about 30 seconds into a map and then one of us will crash. Then log back on and start going again then the other will crash and it just repeats constantly. We have both done different high end strats solo with no crashing happening, only when we get together to play do we crash. We had been duoing for about 2 weeks before the patch on the 15th and after that patch these problems started occuring.