Hi homalgo1 👋.
Thanks for reaching out to us and welcome to the Community Forums. Apologies for the issues that you are facing with your Hub and speeds, whilst we cannot advise using any additional third party devices, we would advise that we look at your equipment further. A powerline adapter would not be viable against a Hub 5 due to the incompatibility of the adapter and the Hubs specifications, there are higher spec third party Wi-Fi Booster/Extenders you can obtain that are capable of the speeds you are subscribed to and will work better alongside of the Hub 5.
If you are seeking more of a sturdy reliable connection, ethernet would be an option via our Wi-Fi Max 👉 Wi-Fi Max. You can still face latency issues with the server that you are connected to as well as your PC settings and monitor settings. Should Wi-Fi Max not be an option, relocating the Hub closer to the PC to provide a shorter range of ethernet cable required for a secure connection.
I hope this helps, should you have any concerns or further questions please come back to us.
Sabrina