Actually its an architectural project. I had an NWD(naviswork) file from which i exported the FBX with limited polygons to 100000 or something. i dont get the verts part.
My syspecs are a sfollows
32gb ram
i7 processor
RTX 8gb grahics.
Also tried in twinmotion not importing please help guys
Out of sheer curiosity - how many verts for 1GB fbx?