My character freezes while the game swirls around me

Hello, I've only very recently been struck with a number of issues, all of which have been solved, save one: So I've always played on EU West Servers, despite the fact that I'm currently living on the east coast of the US (I originally got the game during a study abroad semester in France). My ping is usually between 90-130 ms, which isn't ideal, but I haven't had a single lag problem in the many months I've been playing. However, starting about 3 or 4 days ago, I've been struck with the most bizarre lag I've ever seen. Suddenly, my champion just stops responding to my commands. It doesn't move, doesn't cast spells, nothing. The game around me continues, smoothly as always. Minions move, take damage; enemy champions move; deal me damage; etc. Eventually my champion, after a couple seconds or sometimes after 5-10, snaps back to life, moving in a certain direction or casting the spell I'd been frantically casting during my champ's state of paralysis. Nothing had been "lagging" but my individual champion. The ping never spikes. It always stays within the usual 90-130 ms, but I can't move or do anything. This happens almost every game, sometimes only 2-4 times, often more frequently (like 6-10 times). What is this? Is this really just lag from using a European server that's far away from me? I've never had this problem before... Could it perhaps be that the League servers are just struggling right now? I'd prefer not to start a new NA account with none of my champions, runes, masteries, levels, etc if I can just solve the problem and go back to my 105 ms :) Thank you, TeeRoyX