There's also a general choppiness to X itself. All of this with accelerated Intel graphics, so it's not necessarily driver related. I just figure that given the project's focus on security and clean code, desktop OS performance takes a necessary back seat.
Even with all of that, I give every new release a thorough test run on my old workstation and laptop, just to see if things have improved in that area. And they have been steadily improving!
It's just laggy and runs hotter than Linux. I get a solid hour and a half more battery life on Linux too.
Obviously I reported it.
http://www.laptopmag.com/reviews/laptops/fujitsu-lifebook-s7...
The above ~5yr old laptop will give 60fps running minecraft with no hiccups / glitches. Installed an SSD and frankly its a perfect workstation for anything I would use and I see no lag.
I've found a great use case for it though; older, slower hardware (think P4 and older) actually benefits from running OpenBSD versus most modern Linux distros. For example, I have an ancient PIII laptop that refuses to run anything other than OpenBSD, Slackware, and Haiku OS. Out of those, OpenBSD is the fastest and least buggy. Granted, it's just a toy/hobby device, but I found it intriguing nonetheless.