Razer Blade 15 Base 2020 shuttind down while gaming

Hello so I’ve recently been experiencing issues with my Razer Blade 15, obviously it’s beyond warranty at this time and I had this laptop since 2021. I have had the battery replaced twice now and most recently earlier this month. I am still experincing random shutdowns more frequently when gaming, I do not believe it has anything to do with high temps at all as it shutdown almost instantly for games that require more power consumption such as playing COD, Batman, GTA, etc. I’m not sure what else to do, I have done some research and most likely think it’s something to do with my PSU? Everything else seems to be fine and it charges fully too and can be disconnected without issues unless i’m gaming it shuts off. I do notice that the PC flickers when gaming sometimes switching between plugged in and off when usin cpu/gpui extensive applications but when i’m not gaming it runs fine. I also had bought a different charging adapter sometime last year off amazon as the original one I had before had stopped working. It gives off the same watts required it seems.