Gelatin sets at 20C. That is its melting point in water, regardless of BI. However, on paper it appears to set even when warm, as the water is absorbed into the paper support. You can observe this because the wet melted gelatin is glossy, but as it absorbs into paper and begins to set, it becomes hazy or mildly matte in texture.
The Adox gelatin and paper appear to be very fine materials. I have tested the Baryta paper with good results. But, I use Kodak, Rousselot or Gelita gelatin here.