First and foremost, you're playing on a notebook so higher temperatures are expected. Now here are some things you should mention/include/think about:
-How warm/hot is the room you're in?
-Do you play with your laptop positioned on a hard surface or is it sitting on your bed/lap/whatever else tha might restrict airflow?
-Do you have a laptop cooler?
-Is your laptop old? If so when was the last time you cleaned those dust encrusted fans of yours?
I'd assume you're getting stuttering b\c you're almost maxing out on your CPU temp (GPU can usually go up to 100C) which is normally caused by poor airflow (not much expected in a laptop).