My Predator PH315-51 2018 is shutting down in stress (battery draining while on charge)

hey

i will try to make it as short and as understandable as possible

i tried to play a game (call of duty warzone) which usually should be playable , my frames were super low (about 50 ish) which is understand able because of the computer's age 

the problem kicks in about 25 minutes of gameplay 

(it happened twice , first i was surprised , the second time i waited for that to happen) 

after about 25 minutes of playing , the computer suddenly goes into hibernation. 

in those 25 i checked my temperatures and my battery level and it was all usual (ofcourse it was plugged in during all of the session)

when the computer went into hibernation (than probably shutdown right after) i booted it up again to see my battery level is about 3-6 % suggesting that my battery got drained instantly (i remind you i kept watching the battery and it went from 95 to 0 in almost an instant.

i will add power consumption report from the cmd to this ticket  .

at first i thought to my self , ok , the battery is dead.

so i tried to unplugg it and use it in non-stressfull enviorment , it didnt turn off , so i think the battery should be fine...

i would love to get suggestion from you guys on what to do... 

thanks alot in advance