Before anyone gets too excited, this is on an older iMac: 27" Retina 5k 2017 to be precise.
But when a variety of issues cropped up involving software that stopped playing nice with the older OS, I was really worried Ventura would bring Basecamp to a crawl. BC is the biggest reason I had avoided updating. With the caveat that BC was no speed demon running under 10.13.6, it is no worse under 13.4. I am operating in 2D view and everything is working about the same as under the old OS.
-dan