MultiGPU (4090 and 3090)

Hello there,

I have 2 GPU (GPU 0 4090, GPU 1 3090 - same amount of VRAM).
For any reason, when I’m rendering, Composer is using more the GPU 1 instead of GPU 0


MultiGPU is activated (in PT, RealTime and “True” in Composer’ Preferences).

When on preview, same thing :


Both card are well seen in composer


So, I’m just wondering what / why composer is not using the 4090 more than the 3090, which is supposed to be more powerful (the objective is of course to go as faster as possible to render).

I do think both are working, but the 4090 seems to be underused ?

Thank you :)