I’m having the same problem. The sim has been running great since I built a brand new PC back in November 2020 (That’s almost 8 months without power issue whatsoever), but midway through Discovery Flight at Mt. Everest after Sim Update 5, my PC abruptly shut down after around 15 minutes of flying (that’s also after I lowered the graphics settings a bit to test in-game performance). Ever since that, every time I restart the sim, it gets through the “checking for updates” screen but when it loads around 50-55%, my PC abruptly shuts down EVERY TIME, so I can’t even get to the game menu now. The first shutdown was random mid-flight, yet every time since then it’s 100% reproduceable at launch.
I’d also like to share that right after updating to Sim Update 5 (before the shutdown issue), a tree draw distance fix in the community folder caused the flight to not load at all and it took me some tries to figure that out, which prompted me to relaunch the sim over and over again, but without issue. So before the shutdowns occur, I managed to successfully launch the sim around 10 times.
If a power draw spike tripping the PSU is causing this, I’d likely experience this either during the 8 months before the latest update or right after launching the update, but this is happening only after I changed some graphics settings after Sim Update 5. Coincidence? I think not. I’m wondering if I tripped a bug in the software when I was changing the graphics settings that caused a power draw spike in the latest update, so I’ll try to reinstall the sim to reset the settings and see if it stops shutting down mid-launch.
Here’s my PC specs. Nothing you see below is overclocked because I need my system to be stable for other works:
AMD Ryzen 9 5900X
Colorful iGame GeForce RTX 3070
ASRock B550M Steel Legend
G.Skill DDR4 Flare X PC25600 (2x16GB)
Corsair CX750M 750 Watt 80 Plus Bronze