My game just lags pretty much every play and on the main menu very often for at most a fifth of a second. I'm on Stable, and I play on 1600x900 resolution without compatibility mode. Some maps hardly lag, while maps like Aleph-0 lag about every second which is a pain. The lag is somewhat like a stutter, repeating what was on the tick about once or twice. This makes random sliders a huge pain to play as it's not just the music that stutters, but the objects too, making a map impossible to play.