It worked.
Oh my god. Thank you.
Hero Lab is usable again!
Oh my god. Thank you.
Hero Lab is usable again!
I experienced the bug where things got incredibly slow and I have found a workaround.
If you go to /Applications and right-click on Hero Lab, you'll have an option to "Get Info", click on that, you'll then have an checkbox labelled "Open in Low Resolution Mode", check that.
The application won't look as sharp, but you won't be stuck waiting for many seconds each time you click or scroll.