CI2 BLARING WHITE NOISE OVER SIGNAL

So everything seems to be working fine except after a few minutes of use, the signal becomes heavily distorted and low in level, and a very loud and constant white noise takes over. It’s weird how it works for a bit and then does this… Is this a software/computer glitch or a headphone impedance miss match? I can’t imagine it’s the headphone since it shouldn’t work so well for those first few minutes…