Persistent lag with large files

[Gabriel-p]

With files containing several thousand lines (example data file), the package slows Sublime down to a halt when attempting to edit such file.

I've tried modifying the settings using a smaller file size limit (even down to 1!) and a smaller value of "when_file_size_limit_search_this_num_of_characters", but the lag remains.

[usernamelectro]

I just found this bug while I was editing some fairly large .srt file of 263 KB in size.
This file of mine have 7477 lines, 127587 characters in total.
I wanted to select every fifth number in those rows using regex, and I did it but just after selecting
all those lines using shift+end, Sublime lags for over 30 second in waiting time.

In time of writing this post I am on:

• Freshly installed Sublime Text 3 Beta build 3103 x64
• Windows 10 x64