what setting coresponds with the Grafik adapter ?

I dont even knwo if I quoted the question the right way ...haha
 
If I move midi clips , sometimes sonar has a dropout ...its annoying .......not realy a problem though.
I am sure it is a setting which can be tweaked in order to make the grafix engine not stress the audio engine ....
I have no clue which one though .
Sometimes if I only move one single midi clip it causes an audio dropout .
And also I see the mousepointer go to a circle every  time I move a midi clip ???? As if it would save something after every time I moved a clip with the mouse ....strange
 
 
have a great day