I am with djos here.
I also have one of those SCART-to-HDMI and I am too not very happy with it.
it is as djos said : try Hybris and see how blurry the moving scrolling is but as soon as you pause the game, it is blocky so I might sell mine and get the one djos mentions (thanks man for the link).
Switching resolution is also not not accessible and always have a few seconds lag. and sometimes the screen goes black like if it lost the settings and have to reset.
I hate to be a party pooper but the SCART(RGB)-HDMI Converters arent that great, the bad news is the picture looks nice until things start moving then the picture goes very soft, it's quite distracting (even the pointer in WorkBench).
Basically the "de-interlace picture" part of the converter isnt all that good and results in moving items looking really really soft - like they were shot with a slightly out of focus camera, then as soon as the motion stops the picture sharpens up, it's quite distracting especially on side-scrolling games.
