Had similar issues, (my Keyboard’s LED’s Start to illuminate when i move by, Monitor do funky stuff when i lean forward in my rig,for example) in my case it helps to “discharge” my PC (pull of Power cable, hold Power Button some Seconds) and get a cleaner cable Management… seems like motherboards are subsceptible for EMI thingys…i repeat it every now and then…
I had some EMI issues on my rig is well. Don’t know exactly where it came from since I got everything new together with the SC2, but after having installed a powered USB Hub to connect all my rig hardware and redid the cable management all problems are gone
Actually my cable management is good. I also use a powered USB hub.
My SC2 is however not in the USB powered hub but connected to a single USB port in the PC.
Same for my keyboard.