I am a recent Atom convert coming from Sublime Text and I love Atom and all the different ways I can customize and extend it. So far I have only found one insane performance hog that I felt worth the mention: multi-line cursor editing. From my experiments, performance decreases almost exponentially based on the amount of lines edited beyond 10-20 lines.
I can easily manipulate 200-300 lines in a 6,000 line file without noticeable performance issues in Sublime Text. Maybe this isn’t something I should be doing, but hey, I had a MySQL dump that needed every line of a particular table insert to be modified and I went at it with gusto, and Atom basically crashed. My face was sad.
Is there anything that can be done about this, and if so, what do you need from me to proceed?