Arbitrations enemy level scaling: bugged or intended feature?

[--END--Rikutatis]

In Arbitrations, enemy level scaling is happening MUCH slower than in regular endless missions. 150 minutes into a survival, enemies are still at lvl 260 (normally they'd be at 650). Is that a bug, a side effect of longer rotations or just working as intended and you guys never bothered to tell us? 

Please don't sweep this under the Fortuna rug. It completely defeats the purpose of a challenging endless game mode for vets... At least give us an answer.

[-AoN-CanoLathra-]

May partially be due to the longer times between rewards: if DE just made everything take twice as long, then enemy scaling would be twice as slow. That still doesn't explain the gap entirely, though.

[Chewarette]

I've come back quite recently from an extended cryosleep, we did a 120-waves ODD (because why not), and the enemy scaling was very, very slow. Enemies were "stuck" at lvl 200-250 for a veeeery long time, we barely hit 2000 at the 120th wave.

That seems to be not limited to Arbitrations.

Edited November 8, 2018 by Chewarette