For decent image quality you need at least 3000x1500 pixels
If you set several panoramas to the same coordinates, they will overlap each other and not display correctly when you view them. It is better to place them at a sufficient distance
Number of 360 videos: no more than 12-15 recommended, depending on size
Video resolution: up to 8K
Video bitrate: up to 30 mbps
Video codec: H.264
Video file extension: MP4
Time limitation per video: 90 seconds max
Projection type: Equirectangular projection
Supported clients: Mobile and Desktop
Also, only one video is running at a time and the resource uploading and downloading functionality is used on demand