Editing text in Atom isn't instantaneous for me like MacVim or Sublime but the typing latency is low enough to not bother me (roughly 1-2 frames), roughly the same as the jetBrains family of IDEs. When I load up atom-typescript, typing latency takes a noticeable hit and drops to the annoyingly sluggish range (~3-4 frames). This is on a 2012 mba with a 1.8GHz i5. I also have 2-3s of startup delay and frequently have a half-second to second delay when opening a file. None of these are terrible but they're all noticeable.
I suspect that people who complain about speed are either on lower end hardware or are comparing it directly to a native editor directly and consider any typing latency at all to be unacceptable.
I am talking about 5 seconds a word speed. I type and it takes 5 seconds for my word to show up on the screen. I have default plugins nothing else installed.
I suspect that people who complain about speed are either on lower end hardware or are comparing it directly to a native editor directly and consider any typing latency at all to be unacceptable.