Sharp, light, fast focus, good price (for a Nikon

After a few hours of shooting, I noticed the focus was a bit soft

As an additional symptom of the soft focus issue, VR would sway around not locking on to the subject I was trying to capture

AF-P zoom, if the camera has “timed out” (e.g. info [LEDs] along bottom of viewfinder goes blank) when I press down on the shutter, it loses focus, though it still appears in focus in the vieiwfinder until i push down on the shutter relase

LIkewise, using the Nikkor 200-500mm, F/5.6 doesn’t work for me either because of its weight, the lack of maneuverability and a slightly sluggish auto-focus, compared to the AF-S 300mm, F/4 prime

An aside, playing with the AF on my other camera body, the D750, the focus is absolutely quiet

What does it mean I will "lose focus when it times out?"