Mario Kart: Double Dash!! - Steam Deck GameCube Emulation
The game is running via the Dolphin emulator.
The video consists of two parts:
0:00-3:22 Emulation with OpenGL, 720p, 4xMSAA
3:23-6:18 Emulation with Vulkan, 640x528 (native GameCube res), no MSAA
Second option provides a stable 60FPS experience during the race.