Hello,

I am experiencing a critical stability issue with a Fill + Key output setup on Aximmetry Professional SE v2025.2.0.

The Main Problem: My Fill and Key output (via a Blackmagic Duo 2) works perfectly for the first 2-3 hours of continuous broadcast. After this time, the output begins to lag, stutter, or lose sync, causing a noticeable delay.

The only temporary solution is to completely restart Aximmetry during a commercial break, after which the sync is perfect again for another few hours.

This strongly suggests a performance degradation issue (like a memory leak or buffer overflow) rather than a simple configuration error.

System Specifications (Hardware is Not the Bottleneck): Our hardware is top-tier and is not being stressed:

• Software: Aximmetry Professional SE 2025.2.0

• OS: Windows 11 (This was a fresh format/install before Aximmetry was set up)

• GPU: NVIDIA RTX 4080 Super

• RAM: 128 GB DDR5

• Card: Blackmagic DeckLink Duo 2

• Performance: During the entire broadcast (even when the lag starts), Aximmetry's internal "Processor Load" never exceeds 30%. The system is idle.

My Configuration (Which seems correct): I have already verified and configured all the fundamental sync settings, which is why it works correctly at the beginning:

1. Hardware Genlock (Reference):

• We are using a dedicated Blackmagic Sync Generator providing a 1080i50 Tri-Level Sync signal.

• This signal is distributed to both our main video mixer and the "Ref In" of the DeckLink Duo 2 card.

• In Blackmagic Desktop Video Setup, the card confirms this and correctly shows "Reference: Locked" at 1080i50.

2. Aximmetry Project Format (File > Properties):

• Rendering: The Frame size, Frame rate, and Interlaced settings (1920x1080, 50fps, Interlaced ON) match our studio format.

3. Aximmetry Output Configuration (Edit > Preferences > Video Outputs):

• Fill output is mapped to SDI 1; Key output is mapped to SDI 2.

• The "Sync" checkbox is ACTIVE (spuntata) for  the Fill outputs.

Question: Given that the hardware is high-end, the OS is clean, the resource load is low (under 30%), and the sync settings (especially the dedicated Genlock) are correct, why would Aximmetry 2025.2.0 experience performance degradation after just a few hours?

Is this a known issue with this specific version, Windows 11, or the Blackmagic drivers?

Thank you for your help.