I've got a project that hovers around 30% cpu usage. When i move a slider on the Arp i often get stutters or rather crackles in the audio. This doesn't happen when the slider moves via automation (using Cubase SX 2).
The moving cables and the gui in general shouldn't be a problem as i am using an Nvidia 6800 GT gfx card (gaming and cigarettes, worst addictions you can catch...).
CPU is AMD 64 3500+...Any ideas?