Your comments

Highlighting of all instances the marked word is instantaneous for the same 350MB log file I mentioned in my previous comment.
So it seems like search should be able to be faster too.
I'm often looking at large logs. The current log I'm looking at is 350MB in size.
I hit "Ctrl-F" and try to search, but for each character typed in to the search field there is a long delay. Most likely because a search is being done. Would it be possible to add a delay before a search is done?
Not until I stop typing for a certain timeout would a search be done?
Also "Find Prev" is extremely slow. Even though the next occurrence is just 100 bytes away.
Going through logs I often need to search backwards...