I never said a 1 second feedhold was acceptable. It's not. But if there's no perceivable delay, it doesn't matter what the response speed is.

Imo, all of these technical specs are meaningless to the average user.

I've been using Mach3 for over 10 years, and I think I know it pretty well. And I know it well enough to know that there are better performing options, even if they lack some of the features that Mach3 has.

Remember, Mach3 had a huge head start, but development stopped years ago. It's competition is still adding features, and getting better and better as time goes on.