Various embodiments include techniques for reducing high-frequency interference to a wireless communications channel emanating from a wired communications channel. The techniques are directed towards an application that determines a mode of a particular wired communications channel. The mode of the wired communications channel is indicative of the frequency ranges at which the interference is generated. The application further determines a frequency and/or bandwidth of the wireless communications channel. The application selects a slew rate that reduces the high frequency interference from the wired communications channel at the frequency and/or bandwidth of the wireless communications channel. The application thereby optimizes the reduction of the high-frequency interference from the particular wired communications channel to the particular wireless communications channel.