Is my Seasonic Tx-850W going bad.Shutdown today once

Hi dear users. I have had an problem today.

My pc:

10850K stock 4800mhz stock Kraken X73 good temps

2x16 GB DDR4 GSKILL 3000mhz XMP

Seasonic Tx-850 Ultra Titanium

Gigabyte Rtx 3090 Gaming OC

Aorus Z490 Pro Gaming

1 TB SSD

I bought machine and plugged in march 2021. No single issue,no reboots,no shutdowns. I played all games for many hours,no issues. Today…i launched Metro Exodus and after cinematic when is press E button part pc just shutdown. I rebooted again and its fine again.

Happened when gpu load change from 0% to 99%.

My question is. It was psu issue or maybe other hardware?

I remember that when pc goes off ,pc case lights flickered once and monitor flickered. That not happens when i shutting down manually.

i am running now game and no shutdowns. Happened today once. Also i have pc until march 2021 and thats like today never happened.

Is psu going just bad,rma or what you recommend for me. Thank you

ps:

ps:

I repeated launching game maybe 50 times again and no shutdown.

Hard to say if it just happened once. Could have just been a hiccup in power just long enough to cause your system to power off.

If you keep using the system without any issues, I'd chalk it up to just being a fluke. If the issue were to persist, then you should start trying to figure out the problem.

850w with a 3090? Nope, get a 1000w psu.

If it doesn't happen anymore then you should be fine, demanding games can make your GPU go to 100% load. You can try to undervolt it or lower it's clock speeds.