Any way to force a fixed DeltaTime?

I am trying to use a plugin that exports the captured image from a SceneCaptureCube into a file every frame.

The problem is: the process of exporting a file every frame is slow, so I get times of about 400ms between frames. I do not need this to be playable, I’m only capturing the images, but the variable Delta Time between frames keeps me from having a smooth capture, or a capture with one specific framerate.

Is there any way I can globally override how the Tick function works, so I can force a fixed DeltaTime regardless of framerate?

Thanks in advance!

I managed to solve the problem by running UE4 with the commandline arguments

-BENCHMARK -FPS=XX

With XX being the desired frame rate.