Demanding games turn off the playstation 5 and Tv

I’ve been trying to play with my younger brother but he has a problem with his Ps5. When he plays demanding games like: No Mans Sky, Ghost of Tsushima, Hogwarts legacy and Red Dead Redemption, his playstation and tv turn off completely after about an hour. The power goes out for those devices. His playstation 5 is around 2 years old and I know that it’s not a problem with the tv or the power outlet since I have once connected to his Tv with my playstation and It worked perfectly fine. Is this a problem with his Ps5 wiring or could it be dust? Any help will be appreciated.