EUW Lagging in all games. (Lagspikes. PING,PFS = OK)

After 6.5 my game is unplayable. I have lag spikes, but my ping and fps are good, fps 144(capped), ping 50 all the time, i dont have drops. But im lagging. I make many tests and trys to fix it, but there is no way to fix it. Im really thinking it is SERVER SIDE. I have spikes for month. Im have good knowledge about pc,windows and network. It is NOT caused by my PC or Network. Only LoL is lagging but other mp games dont lag. so im sure it is caused by riot. Many other users have same problem like me.
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