I got a weird problem and I guess it is Lemur controller 4 related.
I have a little self made template and I got 4 faders going to control CC01, 07, 11 and 64 with it.
However, when I want to record etc. a CC01 "modwheel" lane inside Cubase it works fine for a bit but then starts to stutter. I can't dran curves or fine variations anymore. It feels as if I would run an extensive game on a crappy graphics card

Can anyone help me with this?
I am in Cubase, Win7, got Lemur 4 connected with loopMIDI, my machine is pretty powerful.