I have a RTX 2080 that is broken, but interesting thing is that the card works how it should work, but when playing the card crashes, black screen fans go to 100% and nothing happens anymore. I changed thermal paste because I thought it was overheating, but no. So I checked with gpu z and here is what I had.
After a while a dude I got friends with told me to underclock the gpu via msi afterburner. First to underclock the core speed by 200 then open the chart for the mhz and voltage and said that I should change the mhz at 0,9v to 1900mhz. Since then I doesn't crash...