>viewing a slow-motion ad increases feelings of immersion, which in turn lead consumers to expect greater hedonic value from the featured product and thus view it as more luxurious.

Not limited to ads. Number of products deliberately slow down some functions/aspects objectively worsening functionality, but the effect increases perceived value.

- Tape Decks used to open tape drawers veeery slowly, the slower the "better".

- adding mass to objects even when their main purpose depends on users moving them.