Good day. Could the problem described be caused by the use of a DeckLink 4K mini recorder?

Hi Kikilo,

We're delighted you like Aximmetry, thank you!

Thank you for the video.
From that it seems that the tracking is late, so either the tracking delay was increased or the video delay was decreased for some reason.
Decklink should not produce such an issue.  I'm not sure about Vive.

You mentioned "surveillance camera".  What did you mean  (on the video it seems to be a regular camera)?

Thank you for your reply.

"surveillance camera" - There appears to have been a mistranslation. My English isn't very good and I use a translator. My camera is a Black Magic Production Camera 4K.

Yesterday I tried a new installation of the Win10. I only installed aximmeters and UE4. I used Studio drivers for the graphics card.

When I use "Sync" for the monitor I only have 20fps in Aximmeters and a jerky image. When I set 24Hz on the monitor I also have 24fps in the Aximmetry. The image is then fine.

After reinstalling Win 10 the delay was good and did not change. It was late, so I went to bed. 

Today when I did some tests again. The daley start changed. I noticed that if I set something in the Aximmetry that has a short impact on the performance of the PC the delay changes. I'll include "Edge Expand" as an example.

I used the HTC Vive to test nDispals with LED screens, and in about six hours of testing, everything was fine.

Quick thought : In a UE4 project, I have limited FPS to 24 and a running timecode before Decklink.

I'm not giving up, but I may be jumping out the window soon:D

Have a nice day.

I was thinking I could write values of delay. Sometimes I set 2.5 sometimes 5 and sometimes 8 to 10

I feel like there's something wrong with my system. GPUs are around 50-70 percent.

Hi,

Have you also set 24 fps in Preferences / Rendering?

I suggest trying that you do not check Sync on your monitor, just specify the correct framerate in Preferences.

Also are you sure the camera runs on 24fps not 23.976 ?