| will occasionally experience very high volumes of packet loss.|
Just out of curiosity, how are you detecting the packet loss?
Both showed that my computer was connected fine sometimes, but if I ran the test during a period where I was experiencing high latency they showed >20% packet loss.
20% is a little high, but it's not extreme.
What can I do to fix this problem?
From what you describe, this is the only PC in your LAN having issues so that means it has to be that computer. This could be a bad cable issue (if a wired connection) or it could be bad drivers or a bad interface.
I would suggest ensure you have the most up-to-date drivers for the interface and if that doesn't fix the issue, you may have a bad NIC.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.