Hello,
Packet loss is typically caused by network congestion.
It explains here what are the possible causes of packet loss and how to fix it them.
See more here
http://www.annese.com/blog/what-causes-packet-loss
Hope this helps.
Have a nice day!
I've been having problems connecting on online games / having a lot of lag on them. I contacted a support for one of the games and they told me I was having these problems because of packet loss. And also my internet crashed a lot throughout the day and I don't know if that can be caused by packet loss.

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