FC26 input delay in club mode

After the December update, nothing has changed — same PC specs, same settings, everything the same — yet input lag suddenly appeared.
Because of this, 10 people playing together in Clubs mode are all experiencing issues.
The update seems to have caused input lag of 2–3 seconds right at kickoff, which then accumulates to 5–6 seconds as the match progresses.
Please do not blame users’ hardware or system specifications — the problem lies in the game’s programming and update.
We are asking for your team to investigate and fix the code, so paying customers can enjoy the game as intended.
Please consider why users are so upset, and review how this update affected gameplay.
We are asking for improvements, not to vent frustration at your team.

[CM edit - title for CAPS]