
So unless someone has a fix, I'm going to have to return the card tomorrow. I use/need my DAWs and synths a -lot- more than I intend or "need" to stream my Nintendo Switch or my GoPro (the sole use cases). This did absolutely nothing to alleviate the issue. I did try a middle-ground of disabling both the Line-In and Speakers devices in the Sound section of the Control Panel in Windows. I also know the ASIO4ALL author well enough to know there is no way he's going to alter ASIO4ALL to suit whatever the BM driver is doing oddly.

I have zero doubts about the cause/conflict. I've repeated this entire cycle three times.
#FL STUDIO ASIO HMDI DRIVERS#
The second you uninstall BM drivers and reboot, every last one of those programs will launch and run correctly. Absolutely every last one of them crashes on start, right at about the point ASIO4ALL should be starting. I tried: FL Studio 20, Cubase Pro 9.5.30, Studio One 3.5.6, Kontakt 5.8.1, and Omnisphere 2.5.
#FL STUDIO ASIO HMDI INSTALL#
The second you install the BM drivers, anything which uses ASIO4ALL will refuse to start, and will crash so hard that the logs are truncated prematurely.


I tried the latest 10.11.2, as well as the 10.5.4 support wanted me to try anyway for the audio sync issue. NO- application which uses ASIO4ALL will open if the Blackmagic Desktop Video drivers are installed. I went to create a sound today in my DAW. Streaming had an audio sync issue on the HDMI out to the TV (captures/streams were fine, though), and I was working through that with support. I installed my Intensity Pro 4K on Sunday morning.
