My 2017 Razer Blade Pro keeps u charging and recharging when I play certain games.

so, whenever I play a certain game on my computer and it is charging, (which it always is) sometimes it will stop charging while I have it plugged in, resulting in the dimming of the screen, and frame drops, then go back to charging and probably do it all over again. this makes most games that I play unplayable due to the extreme frame drops. I'm not entirely sure if it's the charger, battery, or charging port itself. some help on this topic would be really nice, thank you! I'm very confused as to how this works or happens, and want to get it resolved.