I have zero issues with my intensity shuttle
every time I turn it on it does what it is supposed to
you can read about all my settings in a thread I posted a while back
some people have issues (I think mainly OS related) but don’t be scared away without reading to compare setups first as they seem to be popping up on ebay for a little over 100$ pretty consistently. That being said it isn’t going to do what you are asking for in this instance
I’m using the edirol v440 for my main output upscaling and then I have a couple standalone box solutions for VGA or component to HDMI if I need it
one extron RGB HDMI 300 and one ambery HDV2
the ambery box is just a transcoder so as far as I understand whatever you put it resolution wise comes out the other end just as HDMI
however the extron box could do all the upscaling by itself if need be
you can find extron boxes like the DVS 204/304 that seem to work pretty well
I took a chance on all three of those extron boxes expecting maybe one to work and to my surprise they all did