Comment 1 for bug 1661233

I tried with a 168 M trace file and saw no issues. How big was the file? What type of log file? Does it contain very long lines? Were you using the "-S" flag of less to turn off wrapping? Do other terminal programs show the same behaviour or not?

Honestly I don't think this is directly related to Terminator. All we do is wrap the terminal widget libvte. If there is a slowdown somewhere it's likely to be somewhere in there, or in less itself.