When Spiral Knights first game out, I was able to run it perfectly
When the Steam variant came out, it ran at half the framerate, while the standard version was fine

I just tried launching it a little while ago, but I can't even log in as the game is only updating at around one frame every ten seconds, taking several minutes to input password and attempt log in. From there when I select a character, it slowly, slowly tries to move to a loading screen while getting nowhere.