This is REALLY good to hear! What cameras have you tried it with? My BM intensity pro 4k (does not work with unreal) had problems with Gopro Hero 4 and all my Sony cameras.
Also would love to hear if other features (like genlock, timecode and lens-un distort work with this card).
If you want to see my new sample It is here GitHub - MiloMindbender/UE4VirtualProduction: An example Unreal Engine Virtual Production Project there is NO documentation yet but I am working on it. It is not a photorealistic scene but it is WAY smaller at just 13mb (the old one was 4g) so easier to download.
I am using AJA Kona-HDMI video card, would love to hear how it works with the BM, should be pretty easy to convert over.
If you want to talk directly, send me a PM and I’ll give you my email.