I did a lot of work on performance which you can see in the nightly builds; it was too risky for the 2.0 schedule. We now parse the input stream in a separate thread from where it is rendered. That being said, while the refresh rate is probably lower than it was on your '386, the throughput is undoubtedly higher. If you'd like a higher refresh rate, it's a trivial tweak to a single constant, but in general throughput is more useful.
Yes, throughput is what I'm really after, refresh rate is secondary (still nice, but secondary).
It's great to hear that this work is happening, thank you! And also thank you for all the work, because gripes aside, iTerm2 is the best tool out there.
