Issues, Workarounds & Localization

First and foremost: a picture to illustrate the problem.

Description: I have 2 Ishtars: 1 with a PVP oriented fitting (Docirim),1 with a more PVE oriented fitting (Ventrivo). Since I have a slight aversion against Geckos/Ogres, both of them feature Garde IIs as their best DPS drones, which are used for the DPS calculation. Lows slots are fitted with 3 DDA IIs, Rigs, Meds and Highs have no drone damage amplifying mods/rigs.
I board 1 of the two from another ship in my hangar and get state 1, a fairly normal Ishtar with 692 DPS, which is what I expected after the Drone DPS nerf in Kronos. Now I board the second Ishtar and this one has 761 DPS, with the exact same setup in the lows. Then I go back to the first Ishtar and suddenly this one also has 761 DPS.

Now, I don't complain about having more DPS in my ship out of no where - if it is really there. What bugs me, however, is that I don't know what exactly my DPS is with a given drone. This is a consistent behavior with Sentry Drones: For instance, 5 Curator IIs as best drone in the hold have in the first Isthar 628 DPS, in the second 690 DPS and then also 690 DPS in the first Ishtar. However, if I only have mobile drones in my hold, lets say Hammerheads, Hobgobs, Warriors, the drone Damage stays at 431 DPS on both Ishtars all the time.

Does this happen to someone else too?