I briefly tried the shader in joey's link, but that thing doesn't do a very good job. On high range it becomes a cross rather than a complete blur. It requires a vertical blur for each horizontal sample I think. So that's 9*9=81 samples anyway. not 9+9.

Ill ponder a bit more with the vecskills, really want it to work . And yeah I can have a nice setting that gives me a good FPS, luckily.