Micrologs (Realm: Icecrown)

So, at long last I decided to ask the people in this forum about an issue I've been experiencing for quite a longer while now. First of all, I never had any problems with Warmane Icecrown before, at least not of the magnitude as of late - if I'm not oblivious.
The issue is quite easy to describe: Microlags. Anytime, any day. Warrior's Spell Reflect and Shaman's Grounding Totem both devour two spells (if cast consecutive) at once because of these lags. At times, I can even slightly move while casting, not aborting the casting sequence. So I've asked a few people, most of them agreeing in terms of the aforementioned issue.

Why I eventually chose to ask in this forum is simple: I didn't swap for another internet provider nor did I change anything about my connection at all. In fact, on every other realm I'm active on there's no such thing as Microlags, which is why I wanted to ask whether that's a well-known issue or it's something only a few people have to endure. Problem's first approached like 5 or 6 weeks ago, my current ping (maybe it's an important note: I'm from Germany) oscillates between 30 and 36ms, which shouldn't be that bad in any case, but I've had 20-26ms before (and on other realms, to be more precise).

What to do now? It's quite a bummer and impairing the game experience.
Note: This is not meant to be a ranting thread, I just ran out of options, so I'm asking here.