Just wanted to share with you guys that I have an RTX 3090 FE which causes my PC to reset when playing titles such as RDR2 and Minecraft RTX after an hour or so on max settings; I'm on an AX1600i and tried replacing the PSU with an RM850X and the issue remains. Tried setting my system on stock settings and was still getting a reset. All other components were tested and system ran stable with a 2080 Ti beforehand. Like another poster said here in this thread, I believe it to be a driver issue. That or there is an issue with the GPU itself. Asking Nvidia if I should do an RMA or if this can be fixed via a driver update. Will let you know when they respond.
EDIT: I am able to play games such as BFV, Control, Death Stranding, Doom Eternal without the PC resetting itself and my cpu and ram on overclock settings. PC Specs: i9-10900k 5.1GHz, Trident Z Royal 32GB 4000MHz, RTX 3090 Founders Edition, Corsair RM850X/AX1600i, ASUS ROG Maximus XII Apex Z490, Corsair MP600 4TB NVMe.