Hi,
You need do The CTRL+D to bring up the Project Setting and go into the Dynamics Tab. In there hit the CLEAR CACHE and then hit BAKE. A status bar will pop up and once done the dynamics will be baked in place in real time. You can now scrub through, move cameras around and what you now see through the chosen camera will be exactly what renders.
Dynamics take a lot of calculating so you can’t just scrub through without baking as it’s just giving an approximation of the dynamics.
I was doing this with a mug dropping to the floor and smashing and it was doing exactly the same thing until I baked the dynamics.
Cheers
Oly