lag? or script?

Hi EA team.

When I was playing the Scouting Camp (2nd round), I was playing normally against an opponent with Ballon d'Or, when suddenly after the 60th minute, the match started massively lagging, even tho my network had ~40ms, and I'M SO confused, because if my network was good, why would my match lag? especially after a specific amount of time?

just incase, my opponent's user is BrilloyEspuma, and he had orange network for most of the match too, yet he was moving smoothly.