I’m not a photographer. What I am thinking of is reducing the amount of light that goes into the lens to prevent the sunlight from whiting out the picture.
It is my understanding that one way to do that is to take quicker pictures, whether that is frame rate or shutter speed I don’t know.
Frame rate is indépendant from shutter speed. Shutter speed is how long the shutter is open during an exposure, and has nothing to do with frame rate, which is how many exposures can I make in a second (regardless of shutter speed)
Most enthusiast cameras and up, will shoot 8-12 frames per sec, or slightly more, using the mechanical shutter, but they also are hybrid shutters, in that they are electronic and can shoot at a much higher frame rate,20 to 30 typically, a couple can do 40, one new Sony can do 120, when the shutter is in electronic mode.