After more testing we've finally found why we had a drop in HDR recording/streaming performance after HAGS was added to Windows. It was enabled by default! After disabling it we easily get 4K HDR 60fps capture.

We have recovered most of the functionality after the data center fire in France.

Dear all,

We advise to DISABLE HAGS (Hardware Accelerated Graphics Scheduling) when using Action!. We were tracking performance issues reported by some users and found out that enabling HAGS can cause a big performance hit.

Read more here:
viewtopic.php?p=86780

UPDATE: Strange thing we have noticed. Elgato HD 60S device (an older device) creates an audio capture device that is visible in the system. 4K60 Pro MK.2 does not. It only creates a filter that is a Kernel Streaming Proxy. No idea why they did it this way because audio is not easily accessible by ...

FINAL SOLUTION: Missing audio devices will be added as "virtual audio devices" on the list of System Sound devices: HW AUDIO OUTPUTS (first) 1. Realtek Digital Output 2. Another device... VIRTUAL AUDIO SOURCE: 3. Game Capture 4K60 Pro MK.2 Audio 4. Another virtual device... And rest of the list will...

UPDATE: Strange thing we have noticed. Elgato HD 60S device (an older device) creates an audio capture device that is visible in the system. 4K60 Pro MK.2 does not. It only creates a filter that is a Kernel Streaming Proxy. No idea why they did it this way because audio is not easily accessible by a...

Fix should be ready tomorrow in 4.16.1 (which was supposed to be released today).
The problem is that there was no name filter for "4K60 Pro MK.2" as source of PCM audio that comes together with video (there is HD 60S device though... and it works).

It does not work for Playstation. I cannot see the device on the list. We will check this asap.

EDIT: There is "Game Capture 4K60 Pro MK.2 Audio" audio capture device in the system but it's not visible on the audio device list. We will try to fix this asap.

Just double check on a machine with Elagato installed.

I can see:
1 - 4K60 Pro MK.2 (AMD High Definition Audio Device)

Can you check if this device is visible on Windows Audio devices list (Settings->Audio)

Hi guys, do you see the Elgato 4K60 Pro Mk.2 audio device on the Audio device list (Primary Audio Device)??? When we select it we capture audio only from the capture card. Also from the latest 4K Capture Utility version Elgato fixed the HDR capture problem so it now works both in SDR and HDR. It wor...