First let me give you guys some background of the quality of my connection. I play with an ethernel cable wired to the PS4, and use QoS features from a Netduma router that get me less than 0.1% re-transmit rate(essentially packet loss rate in this context), and A+ grade on both quality and bufferbloat testing from dslreports.com, and my ping to EA's AWS servers is around 25ms. So it is argubaly one of the best connection conditions you can get for online gaming. .

But guess what, whenever I play Rival matches with this connection, 85% of the time I suffer from input delay, and to make things even interesting, the higher divisions I reach, the more often I get delayed situations. I suspect that in Rivals that the lag compensation actually favors the side with worse connection more. So I decided to bypass my router, and to directly connect my PS4 to the modem. I also did the same test for this connection, and it has more than 15% of packet loss rate and just scores C and B on bufferbloat and quality testing from dslreports.com. Technically, I made my FIFA connection worse. Then I go to play some Rival matches, the previous input delay pleague just disappears and my opponent sometimes seem weird and react slowly to certain situations.

But interestingly in Fut Champions, I do find most of the time the delay is gone or less severe with my better connection setting, and I play worse/lose weird games if switch to the modem connection. So I guess that in weekend leagues, the lag compensation less favors the side with worse connection than in Rival?