Question about OnePlus 8 Pro (12GB)

Hello Together I have had the part for more than 1 year now. Everything seems to be running smoothly. However, for 3-4 months now I have had the problem that the gallery is miserably slow. I have the version with 12/256 Deleted cache etc. Some parts of the gallery cannot be opened and when it is open it does not react at all. After taking a photo with the camera, I can't even open it at the bottom right. Any tips? Thank you and best regards