Never stress tested it.It was the first PC and only PC I have ever built. I am still kinda a noob when it comes to things such as overclocking or troubleshooting. When you mentioned my brother hitting the PC hard with a CSGO game I have played more intense games without this sort of issue previously but I do think maybe if my PC did have a problem it was likely something such as low life expectancy on one of the computer parts I have or something