Hello @Andrew,

All my problems are now solved. They all came from the BIOS. I managed to update it with this solution :
https://www.youtube.com/watch?v=449N8h2GdlU

I had to rename the BIOS image name and use the automatic update tool.

I haven't tested performance yet, but I've configured the pass through for a GTX 1070 for transcoding on my mediacenter.

It's well recognized on the target VM (Linux) and by Nvidia drivers.

@olivierlambert "Please always use latest Node LTS."... Ok my bad. I didn't check which version is the LTS version.
Indeed, it works much better.
Thank you!