Euro means he’s probably on 220-240v. Those spikes are in the millisecond range - but they do a number on lesser PSUs. I’ve found to run a 3090 on my lower end 525w psu, I needed to cap power to 280W and frequency to 1650 Mhz. Asus ROG Strix by default was punching up to 1900+Mhz and blackscreening me.

Now things chug along just fine though. 9-year old PSU still inaudible with fanless hydro.

we are in an era where they have already rolled-out such weapons.