I have made a house with 3ds max and i optimized all the objects meshes in the max file before exporting as datasmith to import on unreal. Then, i imported it to unreal with meshes and materials (imported from quixel on 3ds max). I made blueprints and added the missing materials(from quixel) and so on. Then i package the game but unfortunately, it only works on computer with high specs. I watched many youtube videos and tutorials, and i saw the optimization documentation. I tried the scalability option to be low, medium and high. There are no artifical light rather than directional light, sky, and so on. Although the game do not work on laptop with Video card Gtx 1660. What shall i do to solve this problem.