As above. Playing a 2v2 with my team mate and we well and truly had them on the ropes early game and then I get the 'defeated' with 'sync error detected'
Never in approximately 600 hours have I had that happen to me and the timing was more than mere coincedence. Replay will show.
This crap happened to me, last night. Was playing a flawless game and nearly had this player pinned, inside his base. Disconnect. Also, never happened in the 308 hours I've been playing, so far. Stream on alternate monitor and streaming content on TV keeps going. Internet was fine. Nothing else had gone down or lost connection, in any way.