Frequent disconnection from Ultimate team

In my case, using Cloudflare WARP alone was sufficient to stabilize Ultimate Team. You can download it from the official site: https://one.one.one.one/

Steps that worked for me:
Close EA App and FC26.
Install Cloudflare WARP and connect.
Launch EA App, then start FC26.

WARP did not increase ping for me, as it replaces a congested ISP routing path with Cloudflare’s optimized backbone. Even with encapsulation, the cleaner route can result in equal or lower latency.

You can check which Cloudflare edge you’re exiting from by visiting:
https://1.1.1.1/cdn-cgi/trace

and looking at the colo= value

Additional note: You can enable Cloudflare WARP to start with Windows so it is already running when your PC boots. Just make sure WARP is connected before launching the EA App and FC26.

Let me know if this works.