By the way, unless it's a really specific laptop, I highly doubt you can upgrade the processor. All laptops nowadays and a lot of old ones weren't upgradeable
"NintenDON'T sue me please haha"
I have a solid feeling that that wouldn't get rid of the problem. Might increase framerate a little bit, but more likely than not to still be a problem playing it.
Could we know the specs of your laptop in full? like CPU, GPU and OS.