I think I had this happen once on my 1000 Pro, it turned out to be a bad update, I redid the software update on both Devialet's then made new configs and it went away. If you have already tried this then sorry to waste your time.
UK kit - Technics SP10 - Technics EPA-501 - AT33SA - NUC5i3 - W10 - Roonserver - Roon AIR - Devialet 1000 Pro CI - Blue Jeans Speaker Cable (0.5 metre each side) - Magico S5
Spain kit - NUC7i5 - W10 - Roonserver - Roon AIR - Devialet D250 Pro CI - Blue Jeans Speaker Cable - Ergo IX speakers
Spain kit - NUC7i5 - W10 - Roonserver - Roon AIR - Devialet D250 Pro CI - Blue Jeans Speaker Cable - Ergo IX speakers