Breeding is / Walking in Siralim is near impossible with 99 pages of creatures

I wanted to complete my bestiary, so I had the “bright” idea of summoning all the cores I ever collected.

Long story short, about 2.5mil crystal later, I have 99 pages of creatures.
Now every time I talk to the breeder to make new creatures I am stuck waiting +/- 10 minutes.

Walking is not too bad, but there are notable FPS drops.

Is there anything I can do to speed this up? Even releasing creatures is a huge delay. (But I’d really rather not release creatures because then I won’t be able to mass create creatures)

I am on the latest and greatest Android.