(May have spoilers dont read unless you want to)
I have the same issue(samsung s23 ultra)
when i end turns it takes forever unless i tap on the top left icon where the potions are.
And i got stuck at quest 20
Right now i have only 3 quest remaining
20, 30, 31
Iam at collecting signatures main story
And cant get the tavern keepers signature, i also have wine and rope ladder but cant interact with the elf to sneak out from tavern(cant discuss this quest anymore with tavern keeper)