Suggest to add input box to specify smaller length number for the new “Do not highlight if line length exceeds” in Optimization page. (Just like Large File Controller.)
Currently, the minimum number is 0, and then 6,000,000. It can not specify smaller length number, for example: 500,000.
The next beta will allow the increment of 100,000, and the minimum will be 100,000. You can press the Right Arrow key to increment the value while the keyboard focus is set to the slider.