Try to reduce the number of polys significantly. Try adding LODs for your meshes, perhaps?
Also, try running with a smaller window. If you’re running in 4k resolution on a laptop GPU, then that’s unlikely to be a good match between demand and performance, for example.
Turn on the hierarchical scene profiler (there’s docs on the Unreal docs site) and figure out which debug visualizations you can turn on/off to see where performance is going.
Finallly, break down and use a tool like NSight (if you’re on NVIDIA graphics) to measure the different parts of the scene.