OP, did you manage to solve? I was able to play for the past couple days with little to no issue (after calling Fastweb and they said again that there is no issue and best they could do is lower my ping), until tonight. Ofc I get lag right when Twintania casts her first conflag on me, ofc I thought I was under her, but it turns out I was actually standing by the first neurolink. So like usual: everything on my screen moves,I could see conflags fireballs and death sentences, I can chat and use skills on my hotbar (which will trigger the animation) but I am actually standing still somewhere.

I am pretty disheartened at the moment, I have no idea what to do to fix this, since it is so random and it all started apparently without a reason. I had never experienced this before PS4 service went live. I don't think it is a hardware thing, because I bought the PS3 like 6 months ago. I do not have another online game to test, but PSN works fine. Can't do anything like this and it's actually making me want to quit the game :/