I tried this same code on my source code version and SOMETIMES gets up to 100 FPS, but this depends on where you are on the screen what the characters/actors are doing sometimes the FPS falls to 80 FPS and this can be seen in the GPU stats.
My graphics card Nvidia Geforce GTX 1050 is well under spec for UE5.
CPU is AMD 6 core and 16GB memory 256GB SSD again under minimum spec for UE5