Unintentional slowed runs

it does that against the AI in single player career mode, you hold down  to sprint only  to jog instead preventing you to reach important part of the pitch in time ,  and the opponent next to you seems to only jog while you  are holding  down the sprint button. i made a test my stamina was draining  because i was holding down the sprint but the speed was at jog speed,  letting go the spring button made the stamina recover and the speed was the same, so you are not faster only the stamina get drained.