Drops "Zwift Not Responding" w/ a Wahoo Kickr Core

This is for a PC setup. New and frequent Zwift drops (frozen screen, “Zwift Not Responding” msg.) using my Kickr Core w/ both Bluetooth and ANT+ dongle active. After and in a fit of frustration, I’ve tried to pair my PC’s BT w/ the “awake” Core but the PC can’t find it. Any ideas? Thx