Its the same issue man, capture cards won't accept really wacky syncs.The OSSC Pro has lots of great features on the table/in discussion, but altering the sync rate IS NOT one of them.
You could buy my iScan DVDO, it will make the OSSC work with ANY monitor/capture card guaranteed (because it adjusts the rate to 60.0Hz no matter what the input).
Everyone who is saying shit like "oh why can't it just adjust the scan rate" don't understand how the OSSC works or what makes it so special.
It only adds 1ms of lag! Compare that with a device like the xRGB Framemister which adds 16ms of lag.
So how is it able to scale some 16 times faster? Because it has NO FRAME BUFFER PERIOD!
Why dose that matter? You can't alter the timing of motion without a place to store this motion first, no frame buffer = no timing adjustment.
But, no frame buffer means the near direct display of every frame at its original timing (all be it wacky/off spec).