Dang, that’s bad!
Did you try another Version, like 4.2 or so? Don’t know if that’ll make a difference, but it’s worth a try.
Make sure that the Laptop uses the GPU for Blender, because I think they often (if not always) default to the internal graphics.
Also, you installed the NVidia driver, but did you tell Ubuntu, to actually use that driver? Maybe it’s still using the Nouveau, I can’t think of anything else at the moment.
