Just as a datapoint, I had a work laptop checked out for a trip and messed around with Rack on it. Don’t have the exact specs, but basically a Dell with Broadwell I5, and Intel graphics.
I turned down refresh to 30fps (because I always do that anyway) and it literally had NO HICCUPS even on pretty substantial patches.
Does this square with other people’s experience? I was frankly surprised, this was a middling business laptop from a couple years ago but it worked like a champ.