what change 5.0 -> 5.1 render time frozen setting

hello. I would like some help.

I am receiving camera video through opencv and gstreamer. I am doing the following through this value.

  1. Converting matrix information value to texture2d
  2. Change the texture parameter of the dynamic material
  3. Modify the material of the plane to the dynamic material set in step 2

Through this work, I was able to float the plane in the world and transmit the video. However, after updating to version 5.1, it was confirmed that afterimages occurred on the screen.

After hours of searching for information, I found that by changing the r.RenderTime.Frozen setting, the video came out as smooth as before.
But this is not how I want it.
I want to keep this option in the shipping build version.

Can you tell me what has changed since version 5.1?And can I control that option with the C++ source?
Thx. :slight_smile: