I have noticed an irregularity when using AnkiMobile as compared to using AnkiDesktop.
AnkiMobile takes proportionally longer to render cards in the reviewer, if their note type has a lot of card types.
I have uploaded an example deck here.
It contains two notes with three cards per note. One note has a note type with a lot of card types (100). The other note has a note type with very few card types (3). All card types are (basically) the same.
When I review the deck on AnkiDesktop, all cards take about the same time to process. However when I try to review the deck on AnkiMobile, the cards which belong to the note type with 100 card types take a very long time to render in the reviewer, compared to the cards with belong to the note type with only 3 card types.
It seems like the existence of other card types impacts the rendering of the card. How come so?