Need Wired Ethernet Access but Noisy Extender

Current setup - Roon core on Mac mini in other room - microRendu fed by Wi-Fi extender’s wired ethernet cable into Denafrips Terminator ii. Finding it noisy with the extender on the same circuit as my rig. I don’t have the option to run ethernet from my router directly. Am I out of options? Or is there an alternative? Linear power supply for extender?