I understand your point, however I don’t fully agree.
If it were purely an ISP issue, the routing and latency would remain consistent, yet my experience changes drastically depending on the time of day.
At night (after 00:00), the gameplay is perfectly smooth with no input delay, while during peak hours the delay becomes unplayable — despite similar ping values.
This strongly suggests congestion or routing issues between ISPs and EA servers, not just a local connection problem.
I’ve already tested wired connection, different DNS, different routes (including VPN), and the only consistent factor is time of day.
That points to network load and server-side traffic management rather than a user-side setup issue.