I have a large file that is 70 KB, it is lagging really bad on my Surface Book 2 with i7, 16GB and 2 GB graphics card. However, I opened the file on a Lenovo Laptop that has similar specs (i7, 16GB, and a 2GB graphics card). Any recommendations to fix the lagging issue on my book 2.
I think you should take a closer look at the graphics card specifications between the two systems.
Similar memory capacity takes a backseat compared to how well the graphics card drivers function, and what level of support they provide for the OpenGL specification.