Is it possible to apply some sort of render delay to a camera

[L1z4rD89]

I found some code snippets here and there and, erm, did this:
PictureFromPixels.zip (900.6 KB)

If you press Play you should see the realtime record and one with delay

UE4 create texture from C++

How to get texture pixels using UTextureRenderTarget2D class?

I want to get a RenderTarget pixel data real time, so I should to get pixels array pointer(memory address) of RenderTarget. How can I use UTextureRenderTarget2D class to meet the requirements?