I have quite large high-resolution images in my decks (> 50MB). With the latest Anki update for iOS (26.10), these images are not loaded any more or it takes forever and the UI is unresponsive.
This is a regression compared to the previous version.
Thanks for the reports. To narrow this down: is it slow in the Browse list (stuttering or freezing while you scroll past notes with the large image), or on the card itself when you review it or open Preview?