The thing with KR is when you set the FPS to 60 instead of 30 the whole thing ran like a dream. Better than 2D ever did in fact. It was fluid and everything was as instantanious as it could be. Thats one of the things I hope I don't lose with the SA client.
Yep, that setting is accessible from the Graphics tab of the User Settings within the client now.
The other thing to note is if you are running into any sort of screen tearing, you can also try enabling the v-sync option to help reduce it.
Increasing the max FPS or enabling v-sync does have impacts on performance, though.