recently found a much shittier alternative to Magpie - dxgl. Singular plus is it doesn't require fullscreen. Practically no useful settings, just bilinear filtering and that's pretty much it. Also for some reason .dll fucks up window title. Differences noticeable when Paradox is opened in bigger window that 640x480. Left - without dxgl, right - with.
It should work with pretty much any rpgmaker gaem i think.
Magpie is better.