Also bear in mind, that although your first shot with the new ball and club combo may have the meter running at a constant speed, but after that the meter will speed up by X% to whatever it pleases
I might live to regret this but, why do you feel this is the case?
I've often heard people say that rental gear plays better than what you then actually buy. And, to a certain extent, I agree with this. It does seem as if rental clubs perform brilliantly, in my limited experience of renting I'd say I've always found the rentals to be better than the keepers.
But the meter getting faster after a few holes/rounds with new gear? This is something new to me. Either I don't suffer that or I don't see it. I've been playing the L33 Callaway ball for years, from back when it was the Tour iS, and have never noticed any consistent difference with the meter. Sure, I get the odd meter spasm but that's part and parcel of the game, we have to live with it.
Overall I think the game plays very fairly. There will always be the odd WTF? shot but that's true of real life as well. It's only right we occasionally play a shot here where we didn't release the wrists at the right time or didn't clear the hips quickly enough.