Server picking the wrong GPU

Server Version#: 1.22.2.4282
Player Version#: 4.54.5

PMS running on Ubuntu 20.04.

At the moment im testing new hardware for my PMS server upgrade.
My new setup have a Intel iGPU ( i9-9900 ) and a NVidia Geforce 2060Super.
Both iGPU and dGPU are installed and working fine simultaneously. (server is also running TVHeadend, i can pick between Intel VAAPI and NVENC).

However, Plex seems defaulting to the Intel iGPU and i dont see any setting to change it to NVidia.
Is there an option (config file editor?) to force PMS using my NVidia card instead ?
Disabling the iGPU is not an option, i need the iGPU TVHeadend and iKVM.

To set the transcoding device currently requires you add the preference manually.

I presume you have /dev/dri/renderD128 for the QSV ASIC and /dev/dri/renderD129 for the Nvidia.

If this is true,

HardwareDevicePath="/dev/dri/renderD129" added to Preferences.xml (PMS must be stopped when adding. Also recommend making a backup copy in case you make a typo)

@ChuckPa
That was indeed the solution i was looking for, my PMS is now using the NVidia card instead of iGPU.
Thank you very much !!!