Question on amplitude- 3285 movement

[GST15]

I have been reading about the inner workings of watches, and recently purchased a timegrapher. I have about a dozen higher end watches, including 4 modern and several vintage Rolex, Omega, Cartier and Breitling.

My Rolex GMT Master ll, purchased from my AD in 2020 is running between 0 and -2 Spd, 0 beat error and at the correct 28,800. The problem, (if it is one) is that the amplitude is running between 220 and 245. I have read that the amplitude should fall somewhere between 275 and 310, which is where my other (3) 32XX
movements fall.

Is this something that I should be overly concerned with of should I just monitor its behavior, since I have 3 years remaining on the factory warranty. I am inclined to do this, since it is pretty much running perfectly.

Thanks for the help.