Sadly even lowering the threads didn't fix the problem for me at all either, using two Intel Xeon E5-2687W v2 CPUs. Had no problems in previous FIFAs at all, but 21 online is pretty much unplayable for me because of that, as it happens in FUT and even online seasons too.
"an error has occurred, and you are no longer synced with the online game"
This error start happens for me right after I ypgrade me PC. From Intel 7700K to Ryzen 5900X. Tested back on Intel cpu and no error...
Fix it please.
I am getting this disconnect on Pro Clubs, also FUT...
I have an 3900xt and have tried lowering the thread count as mentioned, which didn't seem to work (although I didn't relaunch game after trying...) - have formatted windows, also changed graphics card to a 3070... (Gigabyte Aorus motherboard, 64GB memory)
I don't have this problem on the same network with intel i9 laptop... so think it's some sort of issue with EA/hardware...
I also have this issue and I have a Ryzen 9 3900X, please fix this EA, it's really annoying to get kicked of a game randomly for no reason.
Especially in Pro Clubs when you're forcing everyone to quit because you've been kicked in the first minutes of the match.