No videomonitoring in Fusion but only in DR 17.2.1 Studio

I'm using a BM Intensity Pro 4K and have in Resolve an output via this card to a videomonitor. No problem.
But in Fusion stand alone in the preferences my Intensity Pro is seen but gives no output to my videomonitor.
Tried everything Display Auto or Monitor 1-10 only my second Windows monitor has an output but not via the Intensety Pro.
Have no idea what the problem is. Fusion is also 17.2.1
But in Fusion stand alone in the preferences my Intensity Pro is seen but gives no output to my videomonitor.
Tried everything Display Auto or Monitor 1-10 only my second Windows monitor has an output but not via the Intensety Pro.
Have no idea what the problem is. Fusion is also 17.2.1