The "Device Lost" error is a reminder that emulation is a magic trick. We are asking a modern RTX 4090 to pretend to be a 25-year-old console with a weird PowerPC CPU and a Flipper GPU that ran at 162 MHz. The fact that it works at all is a miracle.
Disable if you are running Dolphin through Steam. Check for Overheating or Power Issues dolphin vk error device lost work
How to Fix the "Dolphin VK Error: Device Lost" on Windows The "Device Lost" error in the Dolphin emulator while using the Vulkan (VK) backend is a common frustration for gamers. This error typically occurs when the graphics driver crashes or resets, causing Dolphin to lose its connection to the GPU. If your game freezes or crashes to the desktop with this specific message, follow this guide to get back to your favorite GameCube and Wii titles. Update Your Graphics Drivers The "Device Lost" error is a reminder that
folder located in your Dolphin user directory (usually in Documents/Dolphin Emulator) to remove potentially corrupted shader files. Use Beta/Dev Builds Disable if you are running Dolphin through Steam
This isn't a fix , but it allows you to work around the error instantly. The downside is that Vulkan often provides better frame pacing and less stutter than OpenGL.