Issue with FC 25 Ultimate Team: Disconnecting Mid-Game

I am experiencing a persistent issue while playing FC 25 Ultimate Team, particularly in Rivals and Champions modes. My internet connection drops before even reaching halftime, and I get a message saying "Your online connection has been lost" or something similar, which then sends me back to the main menu.

I have already tried the following solutions:

1. Restarting my modem and router.
2. Switching from Wi-Fi to a wired connection.
3. Running a speed test (my internet speed is stable).
4. Checking EA server status (there are no ongoing issues).
5. Ensuring my NAT type is "Open".
6. Reducing the number of devices connected to my network during gameplay.
7. Updating my router’s firmware and checking port forwarding settings.

Despite these efforts, the problem persists. I would appreciate any further guidance or assistance to resolve this issue.