Higher Ping than usual the last couple weeks/months

Greetings, I am currently struggling with far higher ping than usual in my LoL games whereas in all other Games my ping is just fine like all the past years. Usually I have around a 30er ping on the EUW Realms, lately I am stuck between 65-75 and I absolutely dont know the problem. Considering my ping is just fine in other Games (WoW it is still at 25, CS its fine, etc.) I highly doubt that this issue is on my end. Anyone else experiencing this and/or maybe knows a fix for it? Edit: To add a slight info; I got a completly new gaming pc by the end of march, I am not sure how that could affect it however.
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