You gave him speed as power, but the mc didn't even put that speed to good use at all, you simply gave him speed as op power and at the same time nerfed his iq and decisions so he don't use it to get stronger faster, u as well gave mc a soft personality so he doesn't kill people and level up faster while he actually have the system that can make him stronger if go on a killing spree and the mc could have simply kept growing up in forests and killing monsters and massacring towns or things like that while avoiding those people that want his power, but you made him go into a town and make friends and start whatever he was doing. U simply gave cool things but nerfed the mc as a whole.