If the resolume PC is at 55% CPU, that is at it's max. Disable hyperthreading in the bios so you can see better what's happening.
The i7 4700HQ is a cpu with hyperthreading, so it can do a little bit more than 50% to fill up it's cores entirely.

Ha! You might be right, we'll test that for sure.
Hope that this is the only problem

THANKS!

Wasn't really thinking of both on the same PC permanently, but rather a test to see if resolume would benefit by more power.

- Tom

Thanks for your intel.
We thought about that and removed the switch.
We once used only one cable from Resolume PC to Production PC,
but still had the problem with the delay (which would be ok if there where no dropping/skipping frames).
We thought, making a triangular setup with the 3rd Streaming PC would solve the problem. But it didn't.

- Sascha

UPDATE!

We asked a guy from NewTek at IBC and he recommended us the triangular setup, as we did in the video.

He said something like:
"NDI protocol sends the video in a specific resolution and framerate.
So if you use the same port/cable to send a video back and forward + the video gets changed, a framedrop can occure.
We also had that problem once here at IBC.
But if you use a 3rd PC which is going to get both videos in a separate way, you should not have any problem.
If it works, or have any idea on how to fix it, please let us know."

But we still have the problem.

The problem I have with his statment was that if you are changing titles or some other things on a different pc, dropping frames doesn't occure. We tested that (vMix <----> vMix).
So he might be wrong.

What's funny about the whole setup is:

- The resolume Pc isn't too weak, we had tests running at around 30% CPU, GPU, RAM.
- NDI input on the resolume pc does indeed have a variable framerate.
- If I change the vMix production framerate to 60p/59,94p (i does not effect anything) the dropping frames are lower, at around 3-7 per second.

Somewhere in this whole configuration is a bug. But I can't see it :s

We tested every production scenario.
But If I lower the framerate, dropping frames are increasing.

60p/59,94p -> ~3-7 dropping frames/second
30p/60i/29,97p/59,94i -> ~9-13 frames/second

Dropping frames are more noticeable on a lower framerate.

Strange, isn't it?

What if you used vMix on the 2nd PC instead of resolume? That is, eliminate the processing time and CPU use of resolume. Compare that result with your first result. You could also check the individual runs for latency and dropped frames using some of the NewTek NDI tools.

- Tom