We had a serious problem with one of our vMix systems.
The GPU Mem in vMix was at 100.
The system had several dropped frames in video and audio. vMix Rendertime went up to 200- 3000 during that dropouts for about 1-3 seconds per dropout. vMix crashed and we had to load the project (without computer reboot). Unfortunately the operator did not note the vMix error message.
Windows Log shows that the virtual memory is insufficient.

I tried to reproduce the error on that machine with the same vMix project with even more inputs + 6 multicoder (vMix AVI) + 2 records (mp4). The GPU Mem was still at 100 but the rendertime was at 6-12 (with max 24 sometimes). No dropouts or errors occured. The test ran for about 6 hours.

CPU: Intel Core i9-9900K 3.6GHz
GPU: ZOTAC GeForce RTX 2070 8GB DDR6
RAM: 16GB DDR4

What happens when the GPU Mem is full. Is vMix still writing and where is that data stored?
Does anyone had a similar behavior before?

Best regards,
Armin

Thx for the link.
I traced the GPU usage back to an image input with 5669x3779 pixel as jpg. The image is used in 10 color inputs (in multiviewlayer) as background.
After removing the image and restarting vmix the cpu is down to 20%.

Now to the strange part:
After adding the picture again and recreating the exact same settings within the colorinputs, the GPU is only at 24%.
Sadly I can't reproduce the error. Even with the saved project with 100% GPU usage and more inputs & records.

So I can't tell for sure that the cache memory was the problem.

Any suggestions?