Inventory of video card over 4 gb

Hi, all i have an issue with WMI SCCM inventory. My inventory is base on WMI query on win32_VideoController to have AdapterRAM. But for video card over then 4 gb I can’t see more then4 gb (max of wmi interger).

Exemple : wmic path win32_VideoController get name, AdapterRAM
AdapterRAM - Name
4293918720 - NVIDIA GeForce GTX 1060 6GB

I saw the pack nvwmi. that can probably help me but when I try to install it on a pc to make a test I received: NVDIAI WMI cannot be installed on this PC.

Any one has a way to have real inventory of video card over 4 gb ram on it?