H2H Input Delay & Gameplay Responsiveness Degradation Issue

I am reporting a recurring technical issue in H2H mode. During continuous grinding, once I start winning multiple matches, the gameplay responsiveness suddenly drops. Player inputs become delayed, passing accuracy collapses, players feel heavy/unresponsive, and overall match control becomes erratic. This leads to forced losses, especially when I am close to reaching a higher division, even against objectively weaker opponents.

There are no issues on my side — my device performance is stable, my connection is strong (low ping, no packet loss), and no apps are running in the background. This problem clearly appears only during progression phases in H2H.

Please investigate the matchmaking, server stability, input delay, and any potential system-triggered difficulty inconsistencies that might be affecting match integrity and fair play.