Hi there,

We have a single Workstation setup with a TRX50, RTX4090 and two Decklink 8K Cards running Windows 11 and Aximmetry 2025.3.0 Broadcast DE rendering in 2160p30. 2 T CAM, 1 V CAM and two external HDSDI live inputs in 1080p30.

Until recently the setup ran fine with CPU and GPU loads well in the green (60-70%). That was until Microsoft forced a background update to Win11 25H2. This caused all kinds of problems, notably forcing us to also upgrade Blackmagic Desktop Video and the Decklink firmware on the cards, as well als the RTX drivers. All of which made it even worse, the system became unstable. Unfortunately there is no readily available backup to the last working configuration, so we had to wipe the system and start from scratch...

Now Windows 11 25H2 is out of the question, so we went back to 24H2. But there also seem to be issues with the Decklink drivers. What happens is whenever we load up one of our previously working compositions the GPU load goes well over 100%. It also happens if we build a new composition with just the 3+3 mixed camera compound and the unreal file. As soon as we add two additional live inputs the GPU load goes through the roof.

So what is the latest stable combination of Windows 11 version, Decklink Drivers+Firmware and RTX drivers you have found to work without these issues in practice?