Sorry I don't recommend PLC (Power Line Communication) for using Internet. They inject data signals straight into your electrical wiring, which creates a lot of high-frequency noise. I would recommend you ditch the Powerline adapter. Go for direct Ethernet runs or MoCA (Ethernet over Coax) instead. Grounded shielded Cat6 (STP) can help but only if both devices at each end are grounded. Those USB-C Ethernet adapters can leak fields near your hand, they’re unshielded and powered from the laptop’s DC lines. Using a grounded docking station often helps. Best setup for you would be ↓ Router → MoCA (or pure Ethernet) → Shielded Cat6 → Grounded metal-chassis laptop dock → Device View quoted note →