Yeah I concur. Sorry if I came off as harsh earlier too. You really do have a nice start to this, but your optimization needs some work. Something as simple as Snader's model for the low poly should work just fine even as an interactable object.
Garagebay, Nice work first of all, the high poly mesh looks great and your bake looks like it's doing its job very well. Your textures are also very nice although I feel you can push the specular a little bit more, particularly along the edges and chippings. As bluntly stated above, depending on the engine, the tri-count…