Nari Ultimate with DeathAdder pro v2 microphone problem

Hi I am little stuck on where to look for help an having no luck but I use the Nari Ultimate with no problems but as soon as set up my new wireless mouse the microphone on the headset just cuts in an out an the mic is unusable. Once the usb dongle is out for the mouse the headset will return to normal an mic works fine. I have moved the usb for the mouse around all the ports on the computer (front an back) an still having the same problem. Checked for all software/firmware an seem to have everything up to date. Any support for a fix would be muchly appreciated. Thank you