Spiral knights is one of these games that not only requires a lot of playtime but also actual skill and knowledge of the game mechanics such as shield blocking and etc.
My suggestion for ooo is to open a european server.
I came to this conclusion once I got to tier 2, which as you probably know, requires a lot more skill and actual understanding of the gameplay than anything in tier 1 due to the higher difficulty, and whenever I play tier 2 I notice that lag plays an increasingly big factor in my deaths and whenever I'm hit or not, sometimes I even get hit without actually seeing the enemy due to him being off screen or on the other side of the room and it's highly frustrating.

Before I get directed to various guides on lag reduction and people telling me to close applications and etc, I have a relatively fast internet and no background applications running so it shouldn't lag from any reason other than the server being on virtually the other side of the world.

I know spiral knights is still young but I believe that as a worldwide game it should also have european servers so all people can play it without lags and frustration, thank you.