Cannot figure out popping/sometimes crackling from monitors.

I have a pair of BX8s running on TLR cables into my Scarlett 6i6 interface and that runs on an ASIO driver in Ableton with a sample rate of 96k and a buffer size of 128 samples. I've made sure my drivers are all up to date. But still I hear pops on both monitors simultaneously during playback of my tracks when I definitely shouldn't always at the same time points. What could be causing this popping and sometimes crackling??