Ping spikes a lot when someone is using youtube

Jura12345

Honorable
Aug 23, 2015
28
0
10,530
So basicly, I am playing Overwatch again after months of break, my sister came from college and she is using youtube a lot, so basicly whenever she is using youtube and I play overwatch, when she enters in the video my ping spikes up to 3000ms which is ofc unplayable, my internet connection is fine, speed is only 10mbit/s download and 1mbit/s upload, my pc is connected wireless to router, I have great connection, I would like to know how can I limit her phone so my ping doesn't spike up more then 80ms, my standard ping is about 45ms (in overwatch)
 

Jura12345

Honorable
Aug 23, 2015
28
0
10,530


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