I was able to 'play' quake 1 which earlier was extremely laggy. The new version seems to be even faster than the old one and can use dynamic recompiler. If you want a picture stretched to full screen size, you should select 'overlay' as an output driver and set scaling to 'none' this will scale to output of games and programs to the full monitor resolution (with aspect ratio) Using OpenGL as a output will use your normal settings means it only scales up to 3 times original size, depending on what scaler you're using. The behaviour of DOSBox change a little while earlier i used glshim to resize the Window to the full desktop resolution, this is no longer working.
It now has build in glshim support for OpenGL output.
I've updated DOSBox to a newer version of its SVN repository.
