@tcutter If these are SS Amp's, I sense a little music heard as Background Music will make the optimisation period feel speeded up. If Valve Amp's I can only suggest keeping close and having 'eyes on' the Amp's when in use.
'Eyes On' has always been the discipline in my home, hence the SS set up for the Wife that is now being investigated / built for her purposes. Vinyl Source and conventional Box Speakers for the eyes on sessions. CD / Streamer for the mooching around the home, maybe for this a Wireless Speaker set up as well.
As somebody who has been to experience Cartridge Demo's using Same Headshell > Tonearm > TT and Audio System.
It is experienced on quite a few occasions that a Cart' that has been declared as not used for a period of time, takes a period of time to come on song.
Usually those doing the listening / assessing are needing to agree when the perceive it is performing at the point it is now worthwhile commenting on.
I have absolutely no doubts Cart's of the designs I am familiar with are needing a period of usage to offer a optimised performance, when the effects of Kinetic Energy on the Cart' has diminished.
There is absolutely nothing to suggest from my end this is a Bad Thing.
Mr J Carr has made known other inefficiencies about energies being encountered, which is what it is, the Cart' is not perfect as a mechanical device for using the embedded data it is designed to pass on to become electrical energy, much of the energy sent is dumped.
The energy dump is not discriminating, both Valuable and Not so Valuable are sent on as Signal and Dumped.