+4
save_on_focus sets off the warning
I occasionally get the 'A plugin (save_on_focus_lost) may be making Sublime Text unresponsive by taking too long (0.247615s) in its on_deactivated callback.' line.
While I understand this is normal and nothing to worry about, perhaps save_on_focus_lost could be given more leniency on larger files that it saves, so it doesn't trip the warning (or even better, improved to be faster!)
Customer support service by UserEcho