How long is the usual time a user stays in a VR project?

The length of time a user stays in a VR project depends very much on the type of VR project and the end device. If it is a simple tour of a flat, which is viewed on a laptop, the length of stay can be much shorter than with a complex, interactive storyline. However, experience shows, that consumers/users stay in a VR project for up to 10-15 minutes on average. This duration is further enhanced by interactions.