Unpredictable Vulkan crashes with vk::Device::waitForFences: ErrorDeviceLost

Hello.

I play for a week now, with a new computer, on 2 characters, without any problem.
This morning, i start an old character and i don't plug the power supply, boom, that crash happens after 5 seconds in an area where the skills are loaded.
I plug on the power supply... no crash anymore.

This is definitely linked to hardware and power needs of the characters you play.