Madden 15 desync issues won't be fully fixed until a patch comes out.
Madden 15 desync issues won’t be fully fixed until a patch comes out.

Even though EA has address the head-to-head issues and the sim stat bug in Madden 15, it appears there are still issues regarding desyncs occurring in online franchise games. In many cases many users are failing to get through the first quarter without having their games disconnect due to a “desync” error thus stalling progress in their franchises.

Josh Looman, from EA, tweeted some info that should help with the issue –

As he noted, this isn’t a server-side issue, so it’s probably best just to leave anything questionable out and stick with the defaults in the meantime. A patch is likely at a minimum still two weeks away.