Did some testing so far on Kyuremu and Victini.
Victini's room has no frame advancement, same with Kyuremu (even though there are some snow particles falling). Turning in Kyuremu's room changed the place by 1, just like generation 4.
Victini advanced the frame three times (0 changes -> 3 changes),
Kyuremu changed twice (0 changes -> 2 changes).
I exited Victini's main chamber many times and did not get either location to change. I did not test the entire building. Battling an NPC inside the building changed the resulting PID/Nature/IVs of the Victini. It also changed when I went back to Hiun and came back.
It did not look like Victini's island had any moving NPCs, his room does not.
Additionally I tested one of the deer trios (Birijion), the one in the forest.
I ran around over 500 steps on a bicycle and neither position advanced (CGear off). It advanced both places by 2 when encountered.
Step counter???
Seeding + Spreads (Birijion)
The positions 022160A4 and 022160A8 changed 3 times (felt like the first one had a delay in between the 2nd two, which changed faster). Was in the Spring Season.
022160A4 started at: 9B7A6317, to 39DD22AA, D69845D5, 412A3D34
and then when encountering: 412A3D34 to 54A2B1C6, D9E3B7E1.
022160A8 started at: 0E6A08D2, to D3B25B59, AE9BA4EA, F5CE805A
and then when encountering: F5CE805A to 39216839, 39016579
The resulting Birijion was bold, (Hex 39206839) (Decimal 0958425145) PID, 18/02/20/14/24/28 (speed last) as the frame advanced twice (frame 2 pokemon? or 1 for PID, 1 for nature?)
Manipulating the Memory Spots
They only changed when I restarted the game. Resetting the game changed it from 00000000, to one value, and then to another. When I entered the game at different time (and delay), I always ended up with the same values as a different time. Upon confirming the CGear to be off/on, these places changed 3 times when I "continued" (fade to season)
Not based on time/delay anymore?
I've noticed saving the game (with the C-Gear off) advances the RNG.
The C-Gear being on advances the RNG at pretty much any time, even if you are at the Party Pokemon summary screen, Pokedex, or even saving.
Having a monster frame of 2 is weird, it could possibly do IVPID and a nature?..... just speculating :)