I've been using biab for about 3 months now & love it.
last week I bought Guitar rig 4

I am now getting a bad high pitched whining sound when conecting computer to mixer/ I know it is somehow a conflict between the 2 programs but cant find a solution. Tried the NI forum site but there users arent as helpful as this forum and the support is the suk.

My signal path is as follows

Gtr into Rig Kontroller into mixer
PC with biab into mixer

only get the whining sounds when both are plugged into mixer
If I cant find a solution, I'll have to go to my backup plan of 1 laptop just for biab and 1 laptop just for GTR rig

any advice would be welcome and if you have a similar setup I'd like to know how your signal path is routed