*This slowness is very noticable in full screen mode.
RE: Yes, if you check Slice display, it is slower than non-slice. The reason is when you check slice display, any part currently showing in scene viewer is given priority to be loaded and displayed. In this way, visitors can earlier see the complete loading of visible part in the viewer although other part may be still grey/blur. This process is more complicated and needs more time, so its slower. While if you dont check slice display, the scene will load in a fixed sequence, what you see in the viewer may be the last to be loaded during the whole loading but the total time is less.
We are trying to improve the loading speed and make it not so noticeable as possible as we can.
*hot spots stop working from time to time
RE:Could you send us the project and tell more details? We will check the issue.
*says scene is fully loaded but still only shows preview image
RE:As long as you check the option of different Pano size for normal and full screen, preview image exists. The first time when you switch to full screen mode which uses higher resolution images that need loading from scratch, if there is no preview image, you will see a completely blank area, I guess this is not users want to see.
I understand that you want same loading effect of TW3, and I hope all the TW users may kindly tell us more what kind of effect you like most, we can try to think of other solutions.