Question All games are crashing within 5 minutes but everything else runs perfect ?

Best to list the make/model of all of your parts.
Some thoughts:

1) What might have changed since before when all was well? Perhaps a windows update?

2) Failure after a time smacks of a heat issue. Monitor your core temperatures with hwmonitor or such and and look for thermal throttling. What is your cooler and is it functioning well?

3) Most consider userbenchmark to be junk science.
 
Any updates on this? I have been following reddit threads lately showing a massive uptick in problems following the latest windows update + 25.5.1 adrenaline update. For me personally no fix has worked and all games remain unplayable with issues carrying over into online browsing and media. Namely black screen crash with DXGI error device hung reports on game load and 2-3 second black screens randomly during browsing.