Hey. Iv'e recently upgraded my gpu from an rx 580 to a Vega 64. Since the upgrade my computer will completely shut down anywhere from 5-30 mins of playing. This did not happen with the 580. At first i thought it was the gpu shutting down under load. But after trying all my other games on high setting, Beamng was the only one that had the issue. Iv'e stress tested successfully, Everything passed on Burnintest. Iv'e tried undervolting the gpu/cpu with no luck, although while undervolting, the crash would take longer to occur. So i thought maybe the PSU didn't have enough juice. But the PSU fan is supposed to start at 60% load, which it never did. Also i would have thought 750w (62 12v) would be fine. Using a PSU calculator, a 550 PSU was apparently the minimum. Tried old and new drivers with no luck. MOBO -Steel Legend B450 CPU - Ryzen 3500x GPU - Vega 64 srtix oc RAM - 16g Balistx 3200 PSU - aerocool p7 750w Platinum WIN 10 My temps before shutdown were fine, sub 75-gpu, sub 60-cpu Help would be appreciated. I really wanna play Thanks. Edit: Just stress tested psu with OCCT and my pc crashed within a minute. So probably the PSU?!?!