Was trying for the first time to go from 1080p6000 to 2160p600 configuration.
I’m using a setup with AMD CPU 3950X and RTX 2080 Ti Xtreme 11G, full SSD with Decklink 4k card
I tried to :
- Retrieve 1080p6000 input from Decklink card
- Mix this input into 1920x1080 center of the screen consumer. (Dosn’t change input size)
- Display to 4K Screen consumer
Using : 2.1.10 NRK, 2.2.0 Stable, 2.2 Last build
Results are not really good whatever casparcg version I use : The video “lags” and is not smooth on the consumer, with CPU going to >60% and performance issue logs on 2.1.10 NRK. (Not seen on 2.2 but I read few months ago the message appears more frequently on 2.1 so I guess this is normal).
Video is “ok” if I put settings below, starting at 2160p3000. (But I didn’t test with many layers / html processing / images / videos that will add more processing and I’m pretty sure in this case I’ll go back to lags)
On the other hand, with the same setup I tried running Vmix with 4k output , which takes my Decklink 1080p60 input and this runs way better without any lag on the output , the processor usage being less than 7%.
Do you know what could cause this huge difference between the two softs ?
What value / data could I provide to help devs to find it?