A computer system concurrently displays a view of a physical environment; and a computer-generated user interface element overlaid on the view of the physical environment. An appearance of the computer-generated user interface element is based on an appearance of the view of the physical environment on which the computer-generated user interface element is overlaid. In response to an appearance of the physical environment changing, the appearance of the computer-generated user interface element is updated at a first time based on a graphical composition of the appearance of one or more portions of the physical environment at different times prior to the first time, including: an appearance of a first portion of the physical environment at a second time that is before the first time; and an appearance of a second portion of the physical environment at a third time that is before the second time.