I have 7ms / 100mbps download / 95mbps upload all the time with speedtest
but on wow, my ping changes from 155 (thats about the best I get) to 600+
I live in South Korea, my internet seems to always be really good when I test it on speedtest.
What create so much fluctuation with my ping?
I have 1 computer and nobody on my wifi.
It's not on your end, it's the connection to the blizzard servers. I'm assuming you're either connecting to EU or NA servers? They're just really far away from you, so transmission isn't the best.