Hi Schnappi,

Thanks for the suggestions!

Regarding the charger: I am using a professional Victron power supply, which is usually very 'clean', but I will definitely try a session without the charger attached for a few minutes to see if the keys/s rate improves. It's a good point about potential EMI interference.

As for the laptops: I will make sure to disable Windows Defender and Firewall completely during the next test to ensure no background process is throttling the connection to the D5T5 servers.

I've tried at various times during the week, but the result has been a consistent 29 keys/s. I’ll report back if the 'no-charger' or 'no-firewall' approach makes any difference in the latency.

Thanks for thinking along!