Hello! I've got lag [weird fast forward/delay lag] issues in an online game called League of Legends. I contacted the support, and they told me to run PingPlotter @ the EUW RIOT servers. [2 servers, as you can see on the screenshots] I ran it 3 times in 3 days.
Then I sent the screenshots to RIOT, and they told me, that it's an ISP problem. I don't know. I have CS:GO & World of Tanks installed as well, but I never lag in those. Could some expert tell me, that what is going on according to the PingPlotter screenshots?

Day 1:





Day 2:





Day 3:




Edited by dat (12/22/18 10:32 AM)