From my experience ping won't hold you back until 100+
I have played league now with 100 ping and 15-25 fps, still got diamond. (my ping has dropped to 80 over the last few months, but my real issue is FPS idc about ping)
I show no sympathy for "my 40 ping is holding me back so hard" or sometimes "why am i getting 500 fps instead of 1000??"
there are many out there climbing in high elo with toasters, complaints are for the weak.