[lazzlazzlazz]

My relatively old laptop runs IntelliJ and PyCharm like a dream... Atom runs sluggishly. I ditched Atom quickly.

[aespinoza]

Also do realize that Atom is not as mature as PyCharm. Don't dismiss Atom so fast. Give it some time and try it again.

Disclaimer: I love PyCharm, and I actually would not replace it with Atom. I believe PyCharm is the best IDE for Python, but Atom has its uses.