Same here. Fifa 23 has been the worst Fifa for this that I can ever remember. All other online games manage fine.
One thing I am noticing which IS a bug is that I get kicked up of a match and then get a promotional splash screen come up detailing the latest players available in packs. It is interrupting the game state and has nothing to do with wi-fi.
In addition to this, we end up getting punished by suggesting that we disconnected on purpose and will receive fewer coins from future matches.
The way Fifa handles disconnected sessions is atrocious yet it won't do anything to players who rage quit matches or abuse the mechanics of the game to make playing these 'people' a truly painful experience.
EA make no attempt to fix the real problems with this game and punish those who don't want wires running all through their house. It's like EA expect us to still be living in 2005 again.
I appreciate anyone who takes the time to respond but just because you say the same thing all of the time ('this will happen when playing over wi-fi'), it does not make it correct.