I get disconnected from all online games I play

I get disconnected from all online games I play! These games currently are league of legends, heartstone and diablo 3. The disconnects happen and my internet is fine . I can browse the internet and stuff but when I play an online game I get disconnected every 10 or 15 minutes or can't even connect in the first place. So if any of you guys have any ideas please help me. I tried fixing the problem myself following youtube videos, reading forums, and writing to the game supportteams but nothing that I've tried has been successfull so far. Thank you in advance!
 
Also you can try to disconnect the network cord from the your wi-fi router and from your computer. Wait not less than 30 seconds. then insert them back. You IP address will be updated so that you could start playing the game. Please write here if this method will work or anyone with the same problem
 
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