High Ping to Router on One PC

Beaver420

Reputable
Oct 6, 2014
9
0
4,520
Hey there. I recently seem to be getting a problem where if I launch a game (Garry's Mod, OSRS) my ping to the router spikes, even on main menus. Here is a before and after screenshot, before I open the game and after.

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I've looked around and have found the issue can be related to the CPU. I'm using an Intel i5 8600k which reaches around 30% load in GMod and 30°C.

Any help would be appriciated :)